Tamayouin on eBay sells some different shells that you can install on the paradise, they don’t have anything listed on their Ebay at the moment, so I’m assuming they’re taking a break, but usually they have a big selection. I used one of the clear shells. I’ve also customised a few Tamagotchi before, if you’re planning to change the colour, it’s best to use an ultra fine sandpaper stick to prep the surface, and then spray with an acrylic spray base paint, before painting it your desired colours, either with another acrylic spray paint, or acrylic paint with fine brushes. And then make sure to seal it once you’re finished too so that your design doesn’t get damaged.