Today I found out you can use stained glass to change the beacon beam color! Which means you can create all sorts of cool color gradients :D : r/ Minecraft
Beacon PE Mod | Minecraft PE Mods & Addons
Beacon – Minecraft Wiki
Beacon Town | Minecraft PE Maps
How to make and use a Beacon in Minecraft Pocket Edition (MCPE 1.19) | Pocket Gamer