I posted this in the 1st Creativity Challenge,but I'll add it here in case anyone missed it. And I'm getting tired of seeing the 0's for this part of the board.
I'll post another later if I can find another short one as typing fast for me means using 2 fingers.
Select Image->Adjustments->Channel Mixer.(You'll have to click"open all menu items" to find this) You can change the settings to lessen or intensify the effect. Just be sure all your adjustments total 100%.
For Red Channel, choose +130% for Red, -15% for Green, -15% Blue (Total 100%)
For Green Channel, choose -15% for Red, +130% Green, -15% for Blue, (Total 100%)
For Blue Channel, choose -15% for Red, -15% Green, +130% for Blue (Total 100%)
Couldn't be simpler!

Select Image->Adjustments->Channel Mixer.(You'll have to click"open all menu items" to find this) You can change the settings to lessen or intensify the effect. Just be sure all your adjustments total 100%.
For Red Channel, choose +130% for Red, -15% for Green, -15% Blue (Total 100%)
For Green Channel, choose -15% for Red, +130% Green, -15% for Blue, (Total 100%)
For Blue Channel, choose -15% for Red, -15% Green, +130% for Blue (Total 100%)
Couldn't be simpler!