Spoonflower color map. The size of the chips is smaller on the wall decal.
I got most of these reds by scanning things around my house that I liked the red and then lifting the different shades by the pixel; and also by averaging areas of the red. You cans see an example of one of my scans, which I turned into a fabric, here: red knit trim (http://www.spoonflower.com/designs/1567517) Three of them were courtesy of a fellow Spoonflower designer, whose designs you can see here: Siya (http://www.spoonflower.com/profiles/siya)