ltstyle_module-theme_colors.sty

\AtBeginDocument{
  \def\ltcolorthemeA{\ltcolortheme}
  \def\ltcolorthemeB{red}
  \def\ltcolorthemeC{green}
  \def\ltcolorimportant{\ltcolorthemeB}
  \ifthenelse{\equal{\ltcolorthemeA}{red}\or\equal{\ltcolorthemeA}{magenta}}
             {
               \def\ltcolorthemeB{blue}
               \def\ltcolorimportant{yellow}
             }{}
  \ifthenelse{\equal{\ltcolorthemeA}{green}}
             {
               \def\ltcolorthemeC{blue}
             }{}
}