After searching for hours and hours, I definitely find nothing more on how to get "glorious technicolor" lookalike photography in photoshop. But I almost think that there is not one proces. It's only by experiment that you can get the result tah you want to have on your pictures. But to get close to it you have two solutions.
The first one is on passing image on CMYK , separate chanel, then ad color to them and recomposing the image. Because Technicolor used to be in CMY.
And the second solution, always on using channel, is to using channel mixer. Easier way but less exact than the first one. So here it is an exemple >
http://photo.net/photodb/photo?photo_id=8311915
The technic is explained in the comments :
"The trick is very simple, open a channel mixer adjustment layer and set the channels as such, red channel= red+140 green-20 blue-20 , green channel= green+140 red-20 blue-20, blue channel= blue+140 red-20 green-20, then flatten image, copy background image, add gaussian blur, set layer mode to lighten and lower opacity to make the blur effect very subtle and that's it."
Then I still wander why there is no action script on this ? O_o
