RE: Changing color of transient mark

[Drew Adams]

> I'm running emacs 24.4.1, and the transient mark color is a very dark
> blue. This makes the highlighted text hard to read.
> 
> Id like to redefine the background color something like this:
> 
>   ((transient-mark-mode 1)
>     (set-background-color "mistyrose")
>     (set-foreground-color "firebrick"))
> 
> but of course this does not work. Short of running PC mode, how can I
> change at least the highlighting background color?

Customize face `region':

M-x customize-face region