I’m with Jimmy, but would go one step further!
When I first read the initial post I wondered why deliria would want to possibly compromise his/her legal position, let the developer off the hook, and possibly breach the Plan’s by-laws?
The builder has admitted liability by offering a “contribution” and the developer is in breach of contract, so I’d forget about removing the paint myself and instead move to legally enforce my contract with the developer.
I know that may mean delaying settlement, but a “step in time” saves many later on, including with building warranty in this case.