I'm stricken with the color dilemma as well
Keycap sets I regularly switch between:
Laser (will be added to rotation), Nautilus, Pulse, Skeletor, The Bro Set, and Troubled Minds.
Case Colors:
Purple - Leaning this way. Due to visualizing with the above sets it might add too much purple to most of them though.
Royal Blue - Tempting, but might conflict too much with most sets listed above... maybe not. I can visualize most of the sets on it in my mind with the case colors, but against the Purple it's a difficult choice.
Black - Best option for key-set variety, but I'm trying to persuade myself to choose a different color, due to everything I own being black and I'm sick of every spec of dust and other debris showing up on it.
Thoughts team?