Need Photoshop help

[The_Punisher]

On a mere awesome wind, I want to alter my avatar a little. Basically, I want to turn the red in my avatar blue.


I\'m pretty sure it\'s a simple alteration, as I remember doing it in the past, however I can\'t for the life of me remember how or find the right buttons now.




Can anyone direct me? I\'d prefer to do it myself.