Hello! I'm newbie here and I have some questions about the colors of the pets. How can I get the Galatic and the Vintage colors?

Galactic is by going to the Coda Caves on certain days of the month (I believe it's the 6-7th) There's a forum group that will remind you when the days happen: https://subeta.net/forums.php/groups/#/group/1182

https://subeta.net/explore/codacaves.php

Vintage is Nostalgia - You need a kit for the pet you want (ex. ) and to go here (Usually through Arctic Frost); https://subeta.net/explore/arctic/vanya.php

Hey, another question, taking advantage of the topic haha. Does the invetory have any quick stock or something for send many items to the vault?

Sort of! At the nav bar, Under commerce > your shops, the little (qs) besides each shop name has a quick stock you can put items into the vault with.

Ty <3 U help me a lot