Is there a way to change the color of all the descriptions easily?
And if there is would it also affect modded books or does that depend on the mod devs?

I tried using crafttweaker but some books (modded and not) don't change the tooltip color and it becomes quite complicated for me (casual players) so I was just wondering if there's an easier way.

Minecraft : 1.18.2
Forge : 40.1.85
Enchantment Descriptions : 10.0.9

Hello, using CraftTweaker to modify the tooltips is likely going to be the easiest and most reliable solution to this for now. I would recommend joining their Discord if you need help with your script. One potential way to do this in a script would be to loop through all tooltip entries and check if they are translatable, then check if the key starts with enchantment. and ends with .desc.