I have two hermit crabs now

But Idk what to name them

One's a lot more active and fast when they walk around but is actually really shy and will hide in their shell if they see me or the other hermit crab

The other hermit crab is a lot more chilled out and friendly, it even let me touch one of its antennae and gave me a high five

They're both in painted shells right now because that's what I bought them in, but I'm already looking for the bag of shells I have to get them a suitable replacement. The shy one is in a red shell and the friendly one is in an orange shell