When I try to start gitk on Mac, below error occurs:

Error in startup script: unknown color name "lime"
    (processing "-fore" option)
    invoked from within
"$ctext tag conf m2 -fore [lindex $mergecolors 2]"
    (procedure "makewindow" line 347)
    invoked from within
"makewindow"
    (file "/usr/local/bin/gitk" line 12434)

Solution

  • brew cask install tcl

Reference