Now, duplicate the layer and then go to Edit>Transform>Flip Vertical
-Set it's blending mode to lighten
Take the original one again and to to Edit>Transform but this time flip it horizontal and then set it's blending mode to lighten
Last- Go to the 2nd one you made (which you originally flipped vertical) go to Edit>Transform>Flip Horizontal too and it's mode should already be set to lighten
Last step!! For each layer-adjust the Hue/Saturation to your preference choosing a different color for each and you should get something like this-