Rebutia Reward

This adorable cactus was a gift from a colleague in appreciation for my work on a complex web development project. She had no idea that Rebutias are some of my favorite cactuses and yet I have only one other cactus from the genus. Our guess is that it is Rebutia fulviseta, based on the flowers, the shape of the body of the plant, and its dark-green-to-violet skin. But I welcome corrections!

The first bloom was a beautiful surprise! Briliant tropical colors In full bloom, the flowers look like antennae
Rebutia fulviseta in bloom