Colorful lighting effect

Start by opening an image of a ramp show or any image you want to add lighting to.

Create a selection of the models using lasso tool.
Press Ctrl+Alt+D to apply feather to the selection. Press Ctrl+J to copy the selection in a new layer. Hide this layer .Select the layer below. From filter menu select render>>lighting effects.
Apply settings as shown.
Unhide the top layer. Select the background layer and duplicate it.

Change the color mode of this layer to screen..

Unhide the top layer.
Duplicate the top layer and change layer mode to screen.