optifine not required
Versions are not limited to 1.19, just ignore the red warning

for normal color leaves ：https://www.planetminecraft.com/texture-pack/xekr-flowers-leaves-model-pack/
the only difference between xekr-flowers-leaves-model-pack is the color of leaves
add models:
flower models
leaves models
lily pad models
amethyst models
pointed dripstone models
snow layer models
moss carpet models
wood log models
vine models
mushroom models