in edit , any user can changue the color of the div or the windowr for the reason is because a lot of programers can have a color assigned so when a programer ends a issue one tester can see if the issue is ready for test and when the tester ends, a tester can changue the color :
for example an issue is resolved changue to green(the programer ends the issue) when te tester ends him test he can changue the issue to blue (indicating the issue resolved ) and when the tester see if the issue its not resolved he can changue the color to yellow(the issue its not ready)