Yeah, I customized the default a bit. I could send you the whole theme, but layouts are still a mess/not finished/organized so I rather not share it right now in such a state.
However, I can definitely share my colors!
First, you need to find your ColorThemes folder. If you don't know where, just find the action:
Show REAPER resource path in explorer and find
ColorThemes in that folder.
Once there, just copy your
Default_4.0.ReaperThemeZip and rename it to something like
Default_4.0_modified.ReaperThemeZip. Why? Because whenever you update reaper, theme files get update too.
After that, just open your version of a theme
(with winrar or winzip) and replace Default_4.0_unpacked.ReaperTheme with this:
http://db.tt/qOWCj2uh
Select your new modified theme in Screensets window and enjoy!