Grass tints grass_block gray

Hello! As you can see on the screenshot, the grass_block under grass and other plants turns gray in the DH's chunks. I'm on Fabric 1.20.1. This is Lithosphere generation + nature's spirit + William Wythers' Overhauled Overworld + Noisium + steep surface fix + a number of other mods, but I'm not sure if they're relevant here.

I'm not using any texture packs.

Is there any solution to this?