Hi,
I got a clue (haha) last month (from a local Adafruit reseller) and now that I am testing more colored stuff on it I discovered the colors looked limited and washed out so after some searching I found the topics on the forum that relate to that, the blue screen tab (which is what I had), the 4 test uf2 that perform as described on a faulty clue (files 2 and 3 get good colors) and I added the stuff that was suggested to fix it in my CPY code: clue.display.bus.send(0x26, b"\x04") and it seems to work well now.
So, I made it work for me, but is there anything I missed ?