I've never had a problem with the default color scheme used in CAMWorks. Namely the magenta fonts, light teal stock preview, green feature preview/outline, red rapid moves, blue feed moves, etc. The one item I would always do is bump the line weight up to 3 from the default.
All the colors have changed in SOLIDWORKS CAM and I personally don't see any of them being an improvement. The yellow font is nearly unreadable and the default toolpath colors are hard to see and even harder to distinguish rapid moves from feed moves.