On Redhat Enterprise gitk returns the following error when launched:
Error in startup script: unknown color name "lime"
(processing "-fill" option)
invoked from within
"$progresscanv create rect -1 0 0 $h -fill lime"
(procedure "makewindow" line 201)
invoked from within
"makewindow"
(file "/..../bin/git-exe/bin/gitk" line 12434)
The fix is to change lime with {lime green}
Regards