Experimenting on Photoshop

I decided to play around a bit on photoshop and see what different effects I could use on the covers.

This is one of the covers:

Here is the experimental cover:

To achieve this I went over each member in a different colour using the brush tool.

Next I set the blending mode to colour which made the image look like this.

I did the same thing to the other band members to complete the image.