hopefully this will be much easier for you but you won't have as much control over the blending of the images as in the way i described earlier...
http://invano.com/?photoshop:MaskingImage
trust me it sounds hard but it's not. i saw a tutorial for a way that might be easier for you. let me see if i can find the tutorial. when i do i'll post the url...
this may sound complicated but it's not...
to make them blue i made a new lawyer below that player and made a selection around them (ctrl + click on the player layer). while there is still a selection around the player fill the new layer with whatever color you like (i of course used blue) inside the selection. hit ctrl+d to deselect change the blending mode of the player to luminosity (drop down menu in the layers palette) and merged the two layers.
to fade the players i made a layer mask (little button on bottom of layers palette) and used the gradient tool set to black-transparent and kept using the gradient tool until i had the desired effect. (use the gradient tool starting from the outside of the image your fading moving in)
edit: oh yeah and in front of the players in the foregound is just a simple gradient with a blue that matched the background fading into transparency...
To those that care. Here is a link to the new band Tremonti, Phillips, & Marshall (Creed's original bassist--left after Human Clay) formed along with Myles Kennedy (Mayfield Four )--AlterBridge...
f*** STAPP!!! :fyou i thought it was coming since stapp and tremonti were pursuing solo albums but still held out hope...
that article was the first i heard that tremonti had philips and is bringing in marshall to join with. that f***ing kicks ass. guess i'm gonna have to make a new sig...