Mother cat and kitten
Manufacturer: Soma Traders, Ltd.
This line was brought out in 1984. The cats come in various colors with the mother cat holding a symbol on her side, like the Ponies from My Little Pony, and the kitten having blank flanks. The brush that comes with each set holds an image of a rainbow on the back.
So far all the mother cats have the same symbol on their sides, namely three butterflies. The only thing that differences is the color of said butterflies. These butterflies can be blue, fluo blue, yellow, dark green or purple. If other colors still exist, then I haven't been able to spot those yet.
The colors we know for the mother cat and kitten pair are: blue, yellow, green, orange, pink and hot pink.
Pictures of Soma cats that belong to other people: