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I was so excited when I found the single byte I needed to add colours that I released the wrong version! I'll be very sad to see them go.

The radar makes a really big difference. Whenever I've tried switching to something more compact the performance suffers. I suspect that with careful tuning more elaborate energy management could make for a good tradeoff.

I'm doing some (very rough) tuning on a simpler table based approach than yours that will cost me the colours but leave the radar intact. It should net some improvement, but I'm not sure how much yet.