Well, selective coloring works to a certain degree but I guess using it means I won't be able to get the kind of coloring I see in your works. Works well for saturating stocks with dull colors and imparting 'life' to them but doesn't really make for interesting stuff like what I saw in the cow tag. And haha, even though my techniques might not be effective, I tend to do that too. The total number of gradient maps and selective colors exceed stock and effect layers combined in most stuff I do to! XD;
The funny thing is, that I pretty much only use this method for colouring, no selective colouring (except tiny touch ups). It should be said that there are more colour correcting layers than effects+stock+everything else combined.
Well, whatever it may be, I'll be learning something new no matter what you decide to throw in the tut. I mean, I only use selective colors to manage colors. Nothing else. Literally. SO WHATEVER YOU THROW AT ME IS GOLD FOR ME. No matter how ridiculous it may see to you. ;p
The secret with that tag is a ridiculous, and I mean, bordering psychotic amount of colour correction. Additionally, the style of colour correcting I use is so hit and miss, I can't explain how it works or why, but it rarely works well. xD