Thread:Eronan/@comment-24541035-20160202003401/@comment-3575603-20160202015429

Have a Photo Editor that can collectively select the same colour, examples: MS Paint does not give the Magic Wand/Colour Select Tool, nor does it allow you to do Layers. Basic explanation that can't really teach you much if you don't know how to use Photo Editors in the first place. I really don't want to explain how to summarize the "how to use each Photo Editor" it'd take way too long, and I don't have much time left anymore. So please, make sure you know how to use a Photo Editor.
 * Adobe Photoshop - Paid
 * GIMP - Free
 * Paint.NET - Free Windows Only
 * 1) Make a design, you may do it on Paper or you can find something on Google to follow off of.
 * 2) Use the Colour Select/Magic Wand Tool to choose the background.
 * 3) Make a new Layer.
 * 4) Invert the Selection
 * 5) Colour in the Selection with the Paint Bucket.
 * 6) Delete the other Layer.