chore: Change Button background color from primary.dark1 to primary.base

[kgabryje]

SUMMARY

Change primary Button background color from primary.dark1 to primary.base to make it consistent with the designs. Also, change background color from primary.dark1 to primary.base of the active label in viz gallery to make it consistent with the button.

CC @kasiazjc

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

Before:

After:

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[kasiazjc]

lgtm, thank you! 🥳