How do I create a colored hologram in 1.15.1?
The CommandScience gene doesn't work.
It is best to use the Summon Generator from https://mcstacker.net/.
Select the Armor stand
Summon Coordinates: ~ ~ ~
NoGravity: True
Custom Name: Click on S, you can select colors and formatting for each segment.
Invulnerable: True
Invisible: True