Full Idea
The sense-datum theorist is either a representative realist or a phenomenalist (with which we can classify idealism for present purposes).
Gist of Idea
Sense-data leads to either representative realism or phenomenalism or idealism
Source
Howard Robinson (Perception [1994], VII.5)
Book Reference
Robinson,Howard: 'Perception' [Routledge 2001], p.176
A Reaction
The only alternative to these two positions seems to be some sort of direct realism. I class myself as a representative realist, as this just seems (after a very little thought about colour blindness) to be common sense. I'm open to persuasion.