I noticed there was a lack of a hue rotation shader, which makes certain things difficult. I took a stab at it, and it ... kind of works. Im not certain what I am doing wrong, and frankly, kindof moved on. So I post it here for those who want to give it a shot and repair it:
This should be pretty straightforward, so I assume im making an assumption I should not be about either the linear RGB colorspace (which, im 99 % sure is what textures are usually handed off as),
Other than that, anyone? Beuller?