The latest version of Special-K seems to be working on this game so texture mods should be no problem.
Download here: https://discourse.differentk.fyi/
If you have question you can post them here but you'll probably get answers faster in the following channels:
Special-K KoA thread here: https://discourse.di...e-reckoning/756
Official KoA Discord with modding channel here: https://www.discord.gg/amalur
NexusMods discord here: https://discord.gg/tJDuqw5
Good luck modding