You can either find them in the winter section as a sparkle or go to Rosetta and paint lady bugs 5-10 times in the normal mode and she will give you one.
Chat with our AI personalities
Talk to Fawn and play that thread game until you get a yellow one
you can't
You can get one by gem hunting with Iridessa
Mariana is in the Pixie Hollow tree in the item shop.
go to silvermist and catch the dew drops(mini-game).