I use a cropped brandon flowers pic
Make a new selective color layer
REDS
Cyan= -18
M= +3
Y= +23
YELLOWS
Cyan= +100
M= +14
Y= +3
NEUTRALS
Cyan= +33
M= -29
Y= -39
B= -11
Make a Hue/Saturation
Layer
Saturation = +17
Make a New Balance Layer
MIDTONES
-32 lll -6 lll +10
NOTE = IF YOUR ICON IS DARK , DUPLICATE YOUR BASE AND CHANGE TO OVERLAY OR SOFT LIGHT MODE