This is the piece I told you to look out for - the sequel painting "Blue Squares". Instead of eggshells, I surrounded the glass with grapefruit slices. Deciding to make it look colorful, I made the grapefruit slices bright orange-red and the squares on the glass a bold sky-blue.
Unfortunately, I do not own any other glasses with the colored squares on them. If I had, I would've added to the series! Maybe sometime in the far distant future I will find similar glasses and use them as my painting models. :)