An example (using the shader posted):
http://www.framecompare.com/screenshotcomparison/WYD7NNNX
I also have an image remapping page that does histogram matching for selected channels. It also presents all the options to white balance (just give it an image containing areas that are supposed to be greyscale)
https://github.com/crabshank/HLSL-Reshade-colour-remappers/blob/master/Image histogram.html