Thanks for the link, nice effect.
Some of the directions aren't very clear are they?
" For a stronger boost add 20
R:140 G:-20 B:-20
same routine as above for other channels."
What does this mean? They haven't added 20 to any of the values listed earlier to get to 140, -20, -20 ie how do you get to R:140 G:-20 B:-20 from R:120 G:-10 B:-10 by adding 20?
Maybe it means add 20 to the red and subtract an additional 10 from the green and blue, then do the same for the other channels? Or is it just a typo and it should be R:140, G:-10, B:-10?
Also, I'd suggest it would be better to do this in an adjustment layer, so you can vary the opacity and strength of the effect.