Flamboyant: Repalletized is a port of the Flamboyant Recrafted mod., which is a port of the Flamboyant mod. The series just continues, huh....

This mod adds 20 brand new dyes, all craftable using existing vanilla dyes! They can be used to make decorative wool, carpets, concrete, terracotta, and glass!

Credits:

Original mod (built off of the source, adjusted to work in 1.20.1) https://www.curseforge.com/minecraft/mc-mods/flamboyant-recrafted

equinoxrex_, for making the original mod. 

Paradiscal, for the dye item textures

bageldotjpg, and elrutlikes for porting to 1.15