Robert,
If the Cannon or whatever "designer" brand of towel passes a burn test then it should be good to go. Color shouldn't hurt anything other than making it harder to tell about what you are removing off the finish. Just make double sure the seams/edges/designs are not sewn with even one synthetic thread or it will scratch. Even if you have to cut the edges off the terry it still may work. Just be very wary of tags, seams/binding, and any designes embroidered in. Just do a autopsy and burn test on one to find out. Let me know how it turns out for you.

Hope this helps...Lee