>>6078126Waterslide transfers are usually not just a tinting thing, even though the underlying colour can show through to some degree. But that simply means you print a colour closer to your desired end result.
A curved surface will make MicroSol or a similar thing even more important than on a flat surface, but you'd want that anyway. For very heavily curved surfaces you'll probably have to start "cutting up" the design you want to apply, given the normal problems with going from flat to round surfaces and vice versa.