The 'Space Fidgit' was also known as a Fidget, Figit and even “Touch me” --
They were mostly green when you looked at them straight on, and more reddish/orange at an angle.
It had a creamy gel-like material inside, and you could change the colors of the inside gel with pressure and angle changes.
Here’s a description from original product packaging:
"This unique plastic disc is filled with fascinating liquid crystals. Just a touch on the back causes liquid to flow into a spectacular show of changing hues and patterns."
These fun toys were made of plastic and filled with thermotropic liquid crystal; the same material found in mood rings.
This 1970's era toy was a thin, octagonal hand-held kinetic toy with a clear plastic window over color-changing goo. It looked a little like a drink coaster, and measured about 3-inches across.
The octagon plastic disc filled was with liquid crystals that you would touch for different patterns. Just a touch on the back caused the encased liquid to flow into a spectacular show of changing hues and patterns.
This 'Magic Color Disc' was a 3" Acrylic discs with a pressure and heat sensitive combination of materials that would respond to the touch of your finger with psychedelic colors of red, blue, green, and yellow.
Very rare, but still available! (see ad below).