"Wait, I don't see any changes? What even is this?" - you, probably

Well, this pack does something called posterizing. This is when you only use a few colors/shades, much like how posters and comic books do.
Most textures in Minecraft are posterized. Some programmer art textures are not posterized, though, and this pack tries to fix it!

tl;dr: I remade some messy textures, trying to use as few colors as possible, while still looking the same.

Textures fixed: Wool, fire, terracotta, sea lanterns, concrete powder, nether portals, lava, grass blocks, tripwire, shulkers, silverfish, endermites, lead knots, alex/steve, creepers, zombies, lapis ores, lapis block, and the exp bar