In this how to video, you will learn how to create a rainbow effect in your photos with Photoshop. First, open the image you want to edit in Photoshop. Next, edit the hue and saturation. Make sure to desaturate the drawing. Next, create a new layer. Select a brush and choose a blue color. Make sure in the new layer that color is selected. Color the top part of the image. Next, select a purple or pink color and color the middle part. Choose a yellow color and color the bottom of the middle part. Lastly, finish the very bottom with a purple color. Once this is done, make any touch ups with the brush for smoother transitions. Make sure the image is not in gray scale before attempting this. You have now created a rainbow effect in your image.