I really like using the color replacement tool- J for the keyboard shortcut (found hiding behind the healing brush)
This is usually only thought of for redeye fixes, but it's awesome for recoloring anything!
Make the foreground color what you want it to be and start brushing away (you can make the brush bigger by clicking the right bracket key over and over)
Also, you can just recolor a portion of the object this way- very versatile tool!
HTH
