A few of them look a bit too washed out from where I'm sitting (specifically the Tatooine and Naboo ones).

Removing the tints or creating interesting effects by changing the colour mix is one thing but those are almost monochrome.

There is a relationship between brightness/contrast and colour saturation, I don't know how you did these but on Photoshop I find it better to play with the colout filter and then nudge the other elements down or up until they look right.

Green tends to balance out pinks, Magenta tends to balance out blues but it's only a general rule.

The PT does seem to be too colourful for it's own good some of the time.