Hah, the only ones I've seen all of are A:tLA and Korra. You may not care about color palette variety in your TV to the extent that I do, but they both make good palate cleansers after something grim (esp A:tLA) and/or desaturated.

I watched parts of season 2 of Korra on fastforward and I know a lot of people didn't like A:tLA season 1 at all, but they're not really much like any of the other shows on the list (that I've seen episodes of), in good ways. Mostly good ways, I guess I never watched season 2 of any of the others on fastforward.

Someday I want to vid HGTV.