Love it ~ I'm glad I am not the only one who plays with stuff like this ;) have you played with the color-changing threads yet? they are fun, too ~ I am putting a few of those on my niece's quilt just to see how long it takes her to notice LOL ~ out of the sun, they appear white. Sun hits them, they change to green or orange or red or magenta or yellow or blue. I have the whole set, made DD a sweatshirt years ago. white on white. Until she went out onto the playground!!!