Grow Saplings!

All blocks are dye-able in world, just place one of the blocks from the mod, and use dye on it.
Sneak while dye-ing blocks to do multi-block areas. Config file can disable these actions, see example at https://github.com/Lothrazar/ColouredStuff/tree/trunk/1.20/examples

Bricks! Dye in world or with crafting

Sandstone! Stairs, slabs, walls, fences, and fence gates!
See Images tab for more
Depends on FLIB https://www.curseforge.com/minecraft/mc-mods/flib