Using Ubuntu 14.04 Trusty, for whatever reason some GTK apps show things that should should be "green" as a color that is very close (but not identical) to "dark green". Wasn't able to see anything strange in the gtk themes, or X11 rgb.txt.
Several other colors don't look exactly right either.
Example in gvim:
Another example happens in the GTK application gitk, where branch names in the revision tree use a dark green background color, instead of the normal bright green that it should be:
To fix gitk, edit: ~/.config/git/gitk
and change all occurances of green to #00ff00. Now the official new color is actually called lime, and green has been made identical to darkgreen, to make the green same as in Web colors (opposed to X11 colors). Someone had a brain fart obviously (bug #744131). However I won't use lime but rather the hardcoded #00ff00, because my experience with these systems tells me that lime is bound to get fu**ed up by some other person's mood.
In particular, the branch name background is the entry: set headbgcolor #00ff00
If the file is empty or doesn't exist then you can simply create a file in place with that name and add that headbgcolor line to it.
All other tools that got broken by this bold change of the Tcl developers will need to be reconfigured similarly, if they allow it. Otherwise the applications will have to be changed, because Tcl devs seem stubborn on the issue.
