Hi,
it is possible to Display the Item lvl Color in the Bag same as the Quality?
uncommon = green
Rare = Blue
Epic = Purple
Legendary = Orange

Now all these qualitys has the same color

I found something that might help you.

I checked through the ItemLevel.lua that came with the elvui remake of adibags and ran it through a text compare module and found that some pieces of the lua from the original addon had some things missing.

You could try it out if you want, I don't know if this is what you're looking for but this will give you an extra option for color schemes. (don't forget to save your original lua before trying this)
https://pastebin.com/DraRMTfm