Sharing is caring.=D
-START-
1. Create a new Photoshop file. (Same width and height with the normal maps that you rendered)
3. Create groups for each layer and duplicate the layer inside the groups.
4. Fill the Background layer with RGB:127,127,255
5. Choose 50% grey for foreground color and 100% white for background color.
Foreground (50% grey)
Background (100% white)
6. Change the BOTTOM layer to MULTIPLY and TOP layer to OVERLAY.
7. Choose the MULTIPLY layer and press "Ctrl+Del"(Shortcut key to fill in background color) in both RED and GREEN channel
8. Choose the OVERLAY layer and press "Alt+Del"(Shortcut key to fill in foreground color) in BLUE channel.
9. Repeat step 5,6 and 7 for other groups.
-END-
Credit:
KianMing
&
http://vimeo.com/8025133