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Oh my chaos Rabbit!! This is amazing :D!!!!
In Sonic the Hedgehog (2006), his debut game, Silver the Hedgehog's cuffs on his arms and legs would open and close depending on if he was using/about to use his psychokinesis. In most dialogue scenes he has them closed, and you can see a fainter turquoise line.
The GIF above is the best representation, as in-game the switch would always happen in a camera angle change. If you really look at the top GIF, there's a slight camera change when his cuffs open, you can also tell from this GIF below;
There seems to be no animation for the cuffs opening, instead only snapping open during camera changes, this was probably because they had two separate models, the top GIF's camera change is because they swapped the Silver model to the one where his cuffs were open, but this isn't confirmed.
This behavior from the cuffs around his gloves and boots has seemingly yet to show up in any other media. In everything following Sonic the Hedgehog (2006) they seem to stay open at all times, even when he's seemingly at rest.