I just noticed this issue with my strafe when setting all the keys white the M key has more of a purple tint noticeable, or on a yellow key background it looks orange, I did update the CUE software a few days ago, dunno if that had anything to do with it, keyboard is on firmware 2.05, I tried to reset it (hold esc while plugging in), but still the same.
nothing else is wrong with the kb so I really don't want to rma it, and only one key has this issue, other darker colors it's fine like red.blue,green.
I take very good care of this keyboard (covered, shut lights off when not in use ..etc), ideas?, I opened a support ticket too.
there was this issue about a week ago where the cue software somehow got corrupted and caused my pc to hard lock, and I also lost a most of my cue profiles, then I uninstalled cue and upgraded to the latest version, now I noticed this key issue - it might be mere coincidence but who knows.