I'm not able to get the colored rune enchantments to work. I'm on 1.15.

I'm using BSL 7.1.04 shaders with Optifine HD G1 pre18

Mods are:
themidnight-0.5.7-3.jar : midnight (0.5.7-3) - 1
AmbientSounds_v3.0.19_mc1.15.2.jar : ambientsounds (3.0.3) - 1
BiomesOPlenty-1.15.2-10.0.0.361-universal.jar : biomesoplenty (1.15.2-10.0.0.359) - 1
CreativeCore_v2.0.5_mc1.15.2.jar : creativecore (2.0.0) - 1
AI-Improvements-1.15.2-0.3.0.jar : aiimprovements (0.3.0) - 1
environmentalcreepers-forge-1.15.2-1.6.1.jar : environmentalcreepers (1.6.1) - 1
GeneticAnimals-0_5_4.jar : eanimod (0_5_4) - 1
AttributeFix-1.15.2-7.0.2.jar : attributefix (7.0.2) - 1
DoggyTalents-1.15.2-1.15.2.3.jar : doggytalents (1.15.2.3) - 1
Abnormals-Core-1.15.2-v1.0.4.jar : abnormals_core (1.0.4) - 1
? maven_libs forge-1.15.2-31.2.0-universal.jar : forge (31.2.0) - 1
Bountiful-1.15.2-3.1.1.jar : bountiful (1.15.2-3.1.1) - 1
Upgrade-Aquatic-1.15.2-v1.6.1.jar : upgrade_aquatic (1.6.1) - 1
ServerTabInfo-1.15.2-1.2.6.jar : servertabinfo (1.2.6) - 1
Xaeros_Minimap_FP20.11.0_Forge_1.15.2.jar : xaerominimap (20.11.0) - 1
Clumps-5.0.2.jar : clumps (5.0.2) - 1
XaerosWorldMap_1.5.7_Forge_1.15.2.jar : xaeroworldmap (1.5.7) - 1
AutoRegLib-1.5-40.jar : autoreglib (1.5-40) - 1
Quark-r2.1-237.jar : quark (r2.1-237) - 1

Not sure where the incompatibility would lie if any.

I have the same problem but with Optifine only, no shaders.
Will try with no Optifine

Can confirm the problem is Optifine, without it runes work properly

Ah I figured as much, thank you!