Today, I retouched a digital picture to give a girls legs a little more tan, since she has a rather fair skintone, especially on her legs. This is how to do it.
Open Photoshop, or some other picture editor supporting layers. Select the region you want to give more color. With the magic wand, or with the magnetic lasso. Now create a new layer, and set layer mode to “soft light”. Fill (Shift-F5) the layer with [R,G,B] = [122,59,34]. Now set both layers to visible. Nice tan! You can adjust the layer fill from 100% to say 75% to give less tan, or you could fill the layer with another (less brown) color.
