Unsure how possible it'd be, but I found that the CIT elytra model textures do not work when you place the elytra into the trinkets cape slot through Elytra Trinket
If it'd be possible to have support for this, that'd be awesome.

It is possible but probably not within the beta timeline. I can look into adding support after v1 is out and stable.

Awesome, already happy to know that it'll be looked into :>!

could it be also compatible with colytra ?
https://www.curseforge.com/minecraft/mc-mods/colytra-fabric

Closing issue for the same reasons as #17.
From the issue:

Aight. As much as I want to add support from CIT Resewn's side, I have decided it'd be better not to for now.
These mods will have to add support on their side and so there is now an api to facilitate that.