Following my previous post I have been playing with the avisynth filters; ColorYUV, Levels and Tweak to try and improve upon the results of the previous settings I posted. I am currently using the following:

ColorYUV(off_u=-2.0,off_v=-4.58).Levels(15,1.08,255,0,255).Tweak(sat=1.1)

After all this playing around it is my opinion that the reason the GOUT looks so washed out is more due to a lack of contrast and the excessive red levels then an actual lack of saturation, although that's not to say that it couldn't use a saturation boost as you can see from the above settings.

I am at work at the moment, but if people are interested I will try and post some before/after shots of the above settings when I get home.