diff --git a/package.json b/package.json
index 3f4fa30568..371df457fd 100644
--- a/package.json
+++ b/package.json
@@ -99,6 +99,7 @@
     "mobx-react": "^4.3.3",
     "openapi-sampler": "1.0.0-beta.9",
     "perfect-scrollbar": "^1.3.0",
+    "polished": "^1.9.2",
     "prismjs": "^1.8.1",
     "prop-types": "^15.6.0",
     "react-dropdown": "^1.3.0",
diff --git a/src/common-elements/fields-layout.ts b/src/common-elements/fields-layout.ts
index 7646da613c..1ddb732a1d 100644
--- a/src/common-elements/fields-layout.ts
+++ b/src/common-elements/fields-layout.ts
@@ -1,12 +1,12 @@
 import styled from '../styled-components';
-import { transparentizeHex } from '../utils/styled';
+import { transparentize } from 'polished';
 import { deprecatedCss } from './mixins';
 
 export const PropertiesTableCaption = styled.caption`
   text-align: right;
   font-size: 0.9em;
   font-weight: normal;
-  color: ${props => transparentizeHex(props.theme.colors.text, 0.4)};
+  color: ${props => transparentize(0.4, props.theme.colors.text)};
 `;
 
 export const PropertyCell = styled.td`
diff --git a/src/common-elements/fields.ts b/src/common-elements/fields.ts
index cbd639aa6f..2b12f3c98d 100644
--- a/src/common-elements/fields.ts
+++ b/src/common-elements/fields.ts
@@ -1,6 +1,6 @@
 import styled from 'styled-components';
-import { transparentizeHex } from '../utils/styled';
 import { PropertyNameCell } from './fields-layout';
+import { transparentize } from 'polished';
 
 export const ClickablePropertyNameCell = PropertyNameCell.extend`
   cursor: pointer;
@@ -13,14 +13,14 @@ export const FieldLabel = styled.span`
 `;
 
 export const TypePrefix = styled(FieldLabel)`
-  color: ${props => transparentizeHex(props.theme.colors.text, 0.4)};
+  color: ${props => transparentize(0.4, props.theme.colors.text)};
 `;
 
 export const TypeName = styled(FieldLabel)`
-  color: ${props => transparentizeHex(props.theme.colors.text, 0.8)};
+  color: ${props => transparentize(0.8, props.theme.colors.text)};
 `;
 export const TypeTitle = styled(FieldLabel)`
-  color: ${props => transparentizeHex(props.theme.colors.text, 0.5)};
+  color: ${props => transparentize(0.5, props.theme.colors.text)};
 `;
 
 export const TypeFormat = TypeName;
@@ -55,13 +55,13 @@ export const PatternLabel = styled(FieldLabel)`
 
 export const ExampleValue = styled.span`
   font-family: ${props => props.theme.code.fontFamily};
-  background-color: ${props => transparentizeHex(props.theme.colors.text, 0.02)};
-  border: 1px solid ${props => transparentizeHex(props.theme.colors.text, 0.15)};
+  background-color: ${props => transparentize(0.02, props.theme.colors.text)};
+  border: 1px solid ${props => transparentize(0.15, props.theme.colors.text)};
   margin: 0 3px;
   padding: 0.4em 0.2em 0.2em;
   font-size: 0.8em;
   border-radius: 2px;
-  color: ${props => transparentizeHex(props.theme.colors.text, 0.9)};
+  color: ${props => transparentize(0.9, props.theme.colors.text)};
   display: inline-block;
   min-width: 20px;
   text-align: center;
@@ -70,8 +70,8 @@ export const ExampleValue = styled.span`
 `;
 
 export const ConstraintItem = styled(FieldLabel)`
-  background-color: ${props => transparentizeHex(props.theme.colors.main, 0.15)};
-  color: ${props => transparentizeHex(props.theme.colors.main, 0.6)};
+  background-color: ${props => transparentize(0.15, props.theme.colors.main)};
+  color: ${props => transparentize(0.6, props.theme.colors.main)};
   margin-right: 6px;
   margin-left: 6px;
   border-radius: 2px;
diff --git a/src/common-elements/mixins.ts b/src/common-elements/mixins.ts
index d4129c89dd..4c9d7803b8 100644
--- a/src/common-elements/mixins.ts
+++ b/src/common-elements/mixins.ts
@@ -4,14 +4,3 @@ export const deprecatedCss = css`
   text-decoration: line-through;
   color: #bdccd3;
 `;
-
-export const hoverColor = color => {
-  if (!color) {
-    return '';
-  }
-  return css`
-    &:hover {
-      color: ${color};
-    }
-  `;
-};
diff --git a/src/common-elements/panels.ts b/src/common-elements/panels.ts
index be6ff931af..4f66e09a63 100644
--- a/src/common-elements/panels.ts
+++ b/src/common-elements/panels.ts
@@ -1,7 +1,7 @@
 import styled, { media } from '../styled-components';
 
 export const MiddlePanel = styled.div`
-  width: ${props => 100 - props.theme.rightPanel.width}%;
+  width: calc(100% - ${props => props.theme.rightPanel.width});
   padding: ${props => props.theme.spacingUnit * 2}px;
 
   ${media.lessThan('medium')`
@@ -10,9 +10,9 @@ export const MiddlePanel = styled.div`
 `;
 
 export const RightPanel = styled.div`
-  width: ${props => props.theme.rightPanel.width}%;
+  width: ${props => props.theme.rightPanel.width};
   color: #fafbfc;
-  bckground-color: ${props => props.theme.rightPanel.backgroundColor};
+  background-color: ${props => props.theme.rightPanel.backgroundColor};
   padding: ${props => props.theme.spacingUnit * 2}px;
 
   ${media.lessThan('medium')`
diff --git a/src/components/Redoc/elements.tsx b/src/components/Redoc/elements.tsx
index 3c1091c68b..ca08785c98 100644
--- a/src/components/Redoc/elements.tsx
+++ b/src/components/Redoc/elements.tsx
@@ -1,4 +1,3 @@
-import { hoverColor } from '../../common-elements/mixins';
 import styled, { media } from '../../styled-components';
 export { ClassAttributes } from 'react';
 
@@ -29,8 +28,15 @@ export const RedocWrap = styled.div`
 
   a {
     text-decoration: none;
-    color: ${props => props.theme.links.color || props.theme.colors.main};
-    ${props => hoverColor(props.theme.links.hover)};
+    color: ${props => props.theme.links.color};
+
+    &:visited {
+      color: ${props => props.theme.links.visited};
+    }
+
+    &:hover {
+      color: ${props => props.theme.links.hover};
+    }
   }
 `;
 
diff --git a/src/components/Responses/styled.elements.ts b/src/components/Responses/styled.elements.ts
index 7f4c7eabf2..b4cf151ac3 100644
--- a/src/components/Responses/styled.elements.ts
+++ b/src/components/Responses/styled.elements.ts
@@ -1,7 +1,7 @@
 import styled from '../../styled-components';
 
 import { UnderlinedHeader } from '../../common-elements';
-import { transparentizeHex } from '../../utils';
+import { transparentize } from 'polished';
 import { ResponseTitle } from './ResponseTitle';
 
 export const StyledResponseTitle = styled(ResponseTitle)`
@@ -13,7 +13,7 @@ export const StyledResponseTitle = styled(ResponseTitle)`
   cursor: pointer;
 
   color: ${props => props.theme.colors[props.type]};
-  background-color: ${props => transparentizeHex(props.theme.colors[props.type], 0.08)};
+  background-color: ${props => transparentize(0.08, props.theme.colors[props.type])};
 
   ${props =>
     (props.empty &&
diff --git a/src/components/SecurityRequirement/SecuirityRequirement.tsx b/src/components/SecurityRequirement/SecuirityRequirement.tsx
index e170404f43..6c6d3ba0ea 100644
--- a/src/components/SecurityRequirement/SecuirityRequirement.tsx
+++ b/src/components/SecurityRequirement/SecuirityRequirement.tsx
@@ -1,6 +1,6 @@
 import * as React from 'react';
 import styled from '../../styled-components';
-import { transparentizeHex } from '../../utils/styled';
+import { transparentize } from 'polished';
 
 import { UnderlinedHeader } from '../../common-elements/headers';
 import { SecurityRequirementModel } from '../../services/models/SecurityRequirement';
@@ -8,7 +8,7 @@ import { SecurityRequirementModel } from '../../services/models/SecurityRequirem
 const ScopeName = styled.code`
   font-size: ${props => props.theme.code.fontSize};
   font-family: ${props => props.theme.code.fontFamily};
-  border: 1px solid ${props => transparentizeHex(props.theme.colors.text, 0.15)};
+  border: 1px solid ${props => transparentize(0.15, props.theme.colors.text)};
   margin: 0 3px;
   padding: 0.2em;
   display: inline-block;
diff --git a/src/services/RedocNormalizedOptions.ts b/src/services/RedocNormalizedOptions.ts
index ccca10a944..7ae0c3c04b 100644
--- a/src/services/RedocNormalizedOptions.ts
+++ b/src/services/RedocNormalizedOptions.ts
@@ -1,4 +1,4 @@
-import defaultTheme, { ThemeInterface } from '../theme';
+import defaultTheme, { ResolvedThemeInterface, ThemeInterface, resolveTheme } from '../theme';
 import { querySelector } from '../utils/dom';
 import { isNumeric, mergeObjects } from '../utils/helpers';
 
@@ -81,7 +81,7 @@ export class RedocNormalizedOptions {
     return () => 0;
   }
 
-  theme: ThemeInterface;
+  theme: ResolvedThemeInterface;
   scrollYOffset: () => number;
   hideHostname: boolean;
   expandResponses: { [code: string]: boolean } | 'all';
@@ -93,7 +93,7 @@ export class RedocNormalizedOptions {
   hideDownloadButton: boolean;
 
   constructor(raw: RedocRawOptions) {
-    this.theme = mergeObjects({} as any, defaultTheme, raw.theme || {});
+    this.theme = resolveTheme(mergeObjects({} as any, defaultTheme, raw.theme || {}));
     this.scrollYOffset = RedocNormalizedOptions.normalizeScrollYOffset(raw.scrollYOffset);
     this.hideHostname = RedocNormalizedOptions.normalizeHideHostname(raw.hideHostname);
     this.expandResponses = RedocNormalizedOptions.normalizeExpandResponses(raw.expandResponses);
diff --git a/src/styled-components.ts b/src/styled-components.ts
index d08dd75585..b504ba4cfb 100644
--- a/src/styled-components.ts
+++ b/src/styled-components.ts
@@ -1,8 +1,8 @@
 import * as styledComponents from 'styled-components';
 
-import { ThemeInterface } from './theme';
+import { ResolvedThemeInterface } from './theme';
 
-export type StyledFunction<T> = styledComponents.ThemedStyledFunction<T, ThemeInterface>;
+export type StyledFunction<T> = styledComponents.ThemedStyledFunction<T, ResolvedThemeInterface>;
 
 function withProps<T, U extends HTMLElement = HTMLElement>(
   styledFunction: StyledFunction<React.HTMLProps<U>>,
@@ -19,7 +19,7 @@ const {
   withTheme,
 } = (styledComponents as styledComponents.ThemedStyledComponentsModule<
   any
->) as styledComponents.ThemedStyledComponentsModule<ThemeInterface>;
+>) as styledComponents.ThemedStyledComponentsModule<ResolvedThemeInterface>;
 
 export const media = {
   lessThan(breakpoint) {
@@ -40,9 +40,9 @@ export const media = {
 
   between(firstBreakpoint, secondBreakpoint) {
     return (...args) => css`
-      @media (min-width: ${props => props.theme.breakpoints[firstBreakpoint]}) and (max-width: ${props => props.theme.breakpoints[
-          secondBreakpoint
-        ]}) {
+      @media (min-width: ${props =>
+          props.theme.breakpoints[firstBreakpoint]}) and (max-width: ${props =>
+          props.theme.breakpoints[secondBreakpoint]}) {
         ${(css as any)(...args)};
       }
     `;
diff --git a/src/theme.ts b/src/theme.ts
index 5f7a4ea82e..cf46f5311f 100644
--- a/src/theme.ts
+++ b/src/theme.ts
@@ -1,4 +1,6 @@
-const theme = {
+import { lighten } from 'polished';
+
+const theme: ThemeInterface = {
   spacingUnit: 20,
   breakpoints: {
     small: '50rem',
@@ -8,9 +10,9 @@ const theme = {
   colors: {
     main: '#32329f',
     success: '#00aa13',
-    redirect: 'orange',
+    redirect: '#ffa500',
     error: '#e53935',
-    info: 'skyblue',
+    info: '#87ceeb',
     text: '#263238',
     warning: '#f1c400',
     http: {
@@ -44,9 +46,9 @@ const theme = {
     fontFamily: 'Courier, monospace',
   },
   links: {
-    color: undefined, // by default main color
-    visited: undefined, // by default main color
-    hover: undefined, // by default main color
+    color: ({ colors }) => colors.main,
+    visited: ({ colors }) => colors.main,
+    hover: ({ colors }) => lighten(0.2, colors.main),
   },
   menu: {
     width: '260px',
@@ -58,10 +60,113 @@ const theme = {
   },
   rightPanel: {
     backgroundColor: '#263238',
-    width: 40,
+    width: '40%',
   },
 };
 
 export default theme;
 
-export type ThemeInterface = typeof theme;
+export function resolveTheme(theme: ThemeInterface): ResolvedThemeInterface {
+  const resolvedValues = {};
+  let counter = 0;
+  const setProxy = (obj, path: string) => {
+    Object.keys(obj).forEach(k => {
+      const currentPath = (path ? path + '.' : '') + k;
+      const val = obj[k];
+      if (typeof val === 'function') {
+        Object.defineProperty(obj, k, {
+          get() {
+            if (!resolvedValues[currentPath]) {
+              counter++;
+              if (counter > 1000) {
+                throw new Error(
+                  `Theme probably contains cirucal dependency at ${currentPath}: ${val.toString()}`,
+                );
+              }
+
+              resolvedValues[currentPath] = val(theme);
+            }
+            return resolvedValues[currentPath];
+          },
+          enumerable: true,
+        });
+      } else if (typeof val === 'object') {
+        setProxy(val, currentPath);
+      }
+    });
+  };
+
+  setProxy(theme, '');
+  return JSON.parse(JSON.stringify(theme));
+}
+
+export interface ResolvedThemeInterface {
+  spacingUnit: number;
+  breakpoints: {
+    small: string;
+    medium: string;
+    large: string;
+  };
+  colors: {
+    main: string;
+    success: string;
+    redirect: string;
+    error: string;
+    info: string;
+    text: string;
+    warning: string;
+    http: {
+      get: string;
+      post: string;
+      put: string;
+      options: string;
+      patch: string;
+      delete: string;
+      basic: string;
+      link: string;
+    };
+  };
+  schemaView: {
+    linesColor: string;
+    defaultDetailsWidth: string;
+  };
+  baseFont: {
+    size: string;
+    lineHeight: string;
+    weight: string;
+    family: string;
+    smoothing: string;
+    optimizeSpeed: boolean;
+  };
+  headingsFont: {
+    family: string;
+  };
+  code: {
+    fontSize: string;
+    fontFamily: string;
+  };
+  links: {
+    color: string;
+    visited: string;
+    hover: string;
+  };
+  menu: {
+    width: string;
+    backgroundColor: string;
+  };
+  logo: {
+    maxHeight: string;
+    width: string;
+  };
+  rightPanel: {
+    backgroundColor: string;
+    width: string;
+  };
+}
+
+export type primitive = string | number | boolean | undefined | null;
+export type AdvancedThemeDeep<T> = T extends primitive
+  ? T | ((theme: ResolvedThemeInterface) => T)
+  : AdvancedThemeObject<T>;
+export type AdvancedThemeObject<T> = { [P in keyof T]: AdvancedThemeDeep<T[P]> };
+export type ThemeInterface = AdvancedThemeObject<ResolvedThemeInterface>;
diff --git a/src/utils/__tests__/styled.test.ts b/src/utils/__tests__/styled.test.ts
deleted file mode 100644
index 630bf950a3..0000000000
--- a/src/utils/__tests__/styled.test.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-import * as react from 'React';
-import { transparentizeHex } from '../styled';
-
-describe('transparentizeHex', () => {
-  test('simple transparentize', () => {
-    const res = transparentizeHex('#000000', 0.5);
-    expect(res).toBe('rgba(0, 0, 0, 0.5)');
-  });
-
-  test('transparentize hex shorthand', () => {
-    const res = transparentizeHex('#123', 0.5);
-    expect(res).toBe('rgba(17, 34, 51, 0.5)');
-  });
-
-  test('do not transparentize (withot last param)', () => {
-    const res = transparentizeHex('#010203');
-    expect(res).toBe('rgb(1, 2, 3)');
-  });
-});
diff --git a/src/utils/index.ts b/src/utils/index.ts
index 21bbc5fa24..846494fa3f 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -1,5 +1,4 @@
 export * from './JsonPointer';
-export * from './styled';
 
 export * from './openapi';
 export * from './helpers';
diff --git a/src/utils/styled.ts b/src/utils/styled.ts
deleted file mode 100644
index fae257a575..0000000000
--- a/src/utils/styled.ts
+++ /dev/null
@@ -1,16 +0,0 @@
-export function hexToRgb(hex: string): { r: number; g: number; b: number } {
-  hex = hex.replace('#', '');
-  const r = parseInt(hex.length === 3 ? hex.slice(0, 1).repeat(2) : hex.slice(0, 2), 16);
-  const g = parseInt(hex.length === 3 ? hex.slice(1, 2).repeat(2) : hex.slice(2, 4), 16);
-  const b = parseInt(hex.length === 3 ? hex.slice(2, 3).repeat(2) : hex.slice(4, 6), 16);
-  return { r, g, b };
-}
-
-export function transparentizeHex(hex: string, alpha?: number): string {
-  const { r, g, b } = hexToRgb(hex);
-  if (alpha !== undefined) {
-    return `rgba(${r}, ${g}, ${b}, ${alpha})`;
-  } else {
-    return `rgb(${r}, ${g}, ${b})`;
-  }
-}
diff --git a/yarn.lock b/yarn.lock
index eec9edbfd2..67048dc576 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5972,6 +5972,10 @@ pn@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/pn/-/pn-1.1.0.tgz#e2f4cef0e219f463c179ab37463e4e1ecdccbafb"
 
+polished@^1.9.2:
+  version "1.9.2"
+  resolved "https://registry.yarnpkg.com/polished/-/polished-1.9.2.tgz#d705cac66f3a3ed1bd38aad863e2c1e269baf6b6"
+
 portfinder@^1.0.9:
   version "1.0.13"
   resolved "https://registry.yarnpkg.com/portfinder/-/portfinder-1.0.13.tgz#bb32ecd87c27104ae6ee44b5a3ccbf0ebb1aede9"