Steps to reproduce the behavior:

1. Open jabref-authors.bib

2. Check ZEUS group color:

3. Save

4. Diff:

   -1 SearchGroup:ZEUS\;0\;ZEUS\;0\;0\;1\;0x008000ff\;\;\;;
   -1 SearchGroup:TOSCA\;0\;TOSCA\;0\;0\;1\;0x0000ffff\;\;\;;
   +1 SearchGroup:ZEUS\;0\;ZEUS\;0\;0\;1\;\;\;\;;
   +1 SearchGroup:TOSCA\;0\;TOSCA\;0\;0\;1\;\;\;\;;

This isn't the color, but something else. What is removed here and why?