how do you think the trolls get clothes with their signs on them? because i really don't think a burgundy blood has custom-tailored hoodies in their closet

It’s actually possible the Jadebloods hand over Shirts with Signs to the Lusii so they can dress the Trolls once they pupate from their Grub state. Otherwise there would be a period of time between pupating and acquiring clothes where every young Troll would just be around, designing their house with the help of the Drones, while also naked. We really don’t even know how the signs are given in the first place, so maybe we’ll get this answered in the next Act of Hiveswap.