Blue skipped right past Donatello, but he expected that. He was the thinker of his family, but it's always made him the more cynical one. Green circled him for a moment, and then continued to someone else, but violet and indigo took a bit longer to consider him.

He wasn't thinking terribly hard about the color choice, though, because he was far more interested in how these things worked. The explanations made it sound like the rings were supposed to be tech, but the whole mystical energy of the emotional spectrum nonsense made it sound a bit more like it was supposed to be magic, and he was getting a little better at reconciling those two with each other, but he still really wanted to take a ring apart and see what was going on under the hood -

The indigo ring landed on his finger.