We know that a Miraculous only has its colors when the kwami inhabits it. When Marinette isn't Ladybug, her earrings are black and shiny. When Adrien isn't Cat Noir, his ring is silver. When Gabriel isn't Hawkmoth, his brooch is just a little purple gem without the wings. So what about Alya when she's not Rena Rouge? Or Chloe when she's not Queen bee? If you have any ideas, post drawings of it if you can.
Another weird thing is that Master Fu's turtle miraculous does not have an inactive form. Even when Wayzz isn't in it, it looks like it's active, like Wayzz inhabited it. What's up with that?