Multi Colour Number Display using Beacons

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Proof of concept for a multi colour 7-segment display using beacons.
Sorry for the clickbaity thumbnail, I wasn't sure how to name this lol.
Also check out • Stupid, Expensive, (po... . He's working on similar tech to try and make a full text/anything display.
Synced Numbers
Syncing beacons is a bit of a mystery to me. I've had no success adjusting for the difference in piston extend/retract timing or using 0 ticks. Rejoining the world sometimes unsyncs the display and moving further away can cause it to sync back up. If anyone knows more, please let me know.
Smaller Display
It takes 5 white glass blocks to fully cancel out a red beam. For the 0, you also need 5 coloured glass blocks to change the white beam to a coloured beam. This is why the display needs to be this big.
That being said, it can be a bit smaller by using 3-4 blocks at the cost of contrast. Especially 4 blocks is fine as the difference with 5 is hardly noticable.
Fixed Sequence
I didn't want to increase the empty space between segments by adding multiple colours. This meant that I couldn't, for example, add red and green glass below the top left segment.
Furthermore, [0, 7], [4, 5, 9], and 2 needed to be of the same colour. I also wanted a repeating sequence. This is why I ended up on this specific sequence.
Full/Base Colour Beacon Spectrum
It's possible to support a wider range of colours without increasing the size between segments. But it will make the display much more complex. It'l likely take a feed tape to cycle between colours or a flying machine approach.