Icon Tutorial One.
Before:
After:
For dark pictures, duplicate base, then put put it on screen
In the layers pallete (Window>Layers)
Layer>New Adjustment Layer>Selective Color
Then click OK and input these :
Reds
-100
-65
+100
+100
Yellows
+100
-100
+100
+77
Greens
+100
-62
-2
+100
Cyans
-2
+100
0
-6
White
+3
+58
0
0
Neutralsbr> +62
+17
0
+3
Then Merge all the Layers together (Layer>Flatten Image).
And you should come out with something like this: