Just to add, variable gallery is moving into core functionality too so next plugin to bite the dust could be the image gallery per variation, which has always been a requirement of mine.
That's not to say the core colour type isn't great! Swatches straight away: no cache drama.
My one and only gripe is the use of hex values which, for products that are reflective, turn them into grey blobs. So we could, perhaps, get the best of both worlds here as well.