Some of the reflections are stamped on paper so you can color them how you please.
Two ways of doing this are inking your stamp up and running your brayer over it and then over the paper. Another way is to ink you image, stamp it on a solid stamp and then stamp the solid stamp onto the paper. That way you could use any coloring method you want.
Another way to do reflections is to stamp the image on vellum or window sheets. I think vellum you could pretty much color the images in with anything. If you are using window sheets you might have to try coloring with sharpie markers.
Hope this helps
