Listens: Mama-My Chemical Romance

From this to this
Using selective colouring, it might be able to be achieved using Variations...but I honestly haven't tried it =]
Done using Photoshop 7

Sharpen the Base
Add a New Layer with #18174B, Set to Exclusion, using the Burn tool, Burn Gerard and Mikey Way ONCE
You get This >>

Using Selective Colouring do the following

Reds

Cyan
+100%
Magenta
0%
Yellow
-65%
Black
-37%


Yellow

Cyan
+2%
Magenta
-1%
Yellow
+20%
Black
-34%

Green

Cyan
-100%
Magenta
+100%
Yellow
-100%
Black
+100%

Neutrals

Black
-33
Leave the rest at 0

Blacks

Black- 100%
Leave the rest at 0

You get something like this



Set to Auto Colour

New Adjustment Layer-Curves
Input- 50%
Output- 44%

New Adjustment Layer-Colour Balance
+32  +38  +75



Flatten all Layers
Duplicate the Layer and Desaturate, Set to Multiply- 20%


Take this by blimey_icons and set to Multiply- 100%
Erase the it from the faces and et volia!