We have a project in science. We need to draw based on a theme. The challenge here is we are not allowed to use crayons, color pencils, oil pastels and other man made coloring materials. We need to get colors from natural stuff. For example, green color from green leaves, black from charcoal. I need suggestions for other natural stuff that can produce other colors like yellow, blue, red, violet, orange,brown. Can't use processed things like ketchup. Since it's like red orange...we can't use it because it was already processed. Help please...

Yes, you can use coffee grounds, teabags,cranberries,beets,orange peels, lemon peels,sweet potaoes for orange, cinnamon,paprika. mustard, tumeric.carrots. Pollen of any flower,grass or leaves,herbs. Good luck!!