Github Firmware

The real problem here is the "Colourtime" option, which reflects the display digits in RGB colours. I'm also playing around with the idea of having the colours slowly propagate down the chain of Pixels, but that is not a problem.

Maybe I'm stating the obvious here but wouldn't a "repeating pattern" scheme solve the colortime issue? Make the colortime code look at the config item "how many pixels". If > 6 just duplicate, e.g. pixel 7 same as pixel 1, pixel 8 same as pixel 2, and so on until you get to the last pixel.

Or simply disable the colortime feature if number of pixels > 6

exactly, set the pixel colour as <pixel-number> % <DIGIT_COUNT>

"%" is the "modulus" operator.