Grey Phase to Red Phase Rosie?

[Grael]

omg my greyphase rosie shed last night, and today shes totally and utterly differant! i know all spiders look lush after a shed, but her hair is bright red, her head is a gorgous pureple/pink colour, and the rest of exoskeleton is a lush black colour.

so i was wondering, will she in a while go back to her dull grey colour, or can rosies change thier colours after a shed?