My cupholder no longer fits snugly in the console, because a small "plus" shaped tab is broken off the underside of it.

The beige cupholder is no longer available new - despite what's listed here (my order was cancelled):

https://www.infinitipartsdeal.com/pa...odel=&Filter=()

Is it possible to buy an assembly in another color, and then swap my beige cup holder lid/door onto it ?

Is the cupholder an i30-specific item, or does it interchange with Maxima ?

 

I think it is the same as the Maxima's.

Your best bet would be from the junkyard, or perhaps eBay for a used one.