I modified the jjj_gammaTools script from creative crash to insert a remap HSV node instead of a gamma node.
I’ve made a few modifications denoted by a “//smb edit” so if you scan through it you can see what i changed.
It by default would insert it into every color attribute, but i removed those so it only works on diffuse and color channels (mia_materials and maya shaders) respectively.
I set the defaults so it starts up with the right options when you run jjj_gammaTools; It needs to be set on remapHSV and fileTextures ONLY.
If you select your shaders and hit Update Selected it’ll work.
There are some places in the script where you can add default values for the node etc. I didn’t have much time to goof with it, but it has been tested on a model with several hundered various shaders and it works. The undo doesn’t work tho.