We finally received our shipment of Hoffman 3-D fabrics - what fun! Yes, they did come with a few sets of 3-D glasses so that we could enjoy the full effect.
And then, of course, being the fabric junkies that we are, the rush was on to see what OTHER fabrics also have that 3-D effect.
Surprisingly, there is a clear answer to this! We looked at a fabric by Timeless Treasures, with puzzle pieces in blue, cyan, green, yellow, and red all tossed on a black background. And sure enough, some of the colors seemed to "float" above the surface of the fabric varying amounts. The red seemed closest, then the yellow; the green was just a little bit up, and the cyan and blue were "normal" in that they didn't seem to be coming closer at all.
And this was true-to-form with the Hoffman fabrics. The three of them had warm colored objects against a cool background, and with the glasses on those objects did seem to come closer.
Now, why do I get the feeling that any kid under the age of 8 would already have known all this, intuitively? :oops: