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Step 1
Open Channel Mixer


Select Blending Mood 

[Lighten]


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Step 2
Open Hue/Saturation
Select-[Red]


Select-[Yellows]

Select-[Blues]


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Step 3
Open Selective Color

Select-[Reds]

Select-[Whites]

Select-[Blacks]

Select-[Neutrals]


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Step 4
Open Curves