Let's say you have a cube that's tiled with lego pieces, like the Fanxin Color Brick 3x3. During FMC, instead of conventional insertion stickers, you can stick other legos on the pieces you want to trace; basically, reusable insertion stickers.
I'm fairly sure I'm not the first person to think...
I became color neutral very early on, back when I was still using the beginner method. I don't think I'd even started to time my solves yet at that point.
Make Skewb an Official Event!
Based of of the popularity of this puzzle and the number of people who want it included at competitions, I think we should petition the WCA to make Skewb an official event. This puzzle would be very easy to implement, and would attract some new cubers.