Exposing assets generated by XcodeBuildToolPlugin to Interface Builder

In Xcode 14 Beta 5, I'm using an XcodeBuildToolPlugin to generate Named Color assets. While accessing these assets from code is working as expected, I don't see these generated Named Colors in Interface Builder. Is this expected behavior, or is this something that needs fixing?

Exposing assets generated by XcodeBuildToolPlugin to Interface Builder
 
 
Q