Piper: Black. Bold 'n'  gorgeous.

Percy: Blue! Ahhh!!! Blue rules!!!!!!! 

Annabeth: *She smiles, rolls her eyes and says affectionately,* Seaweed Brain. Btw, mine is grey. Stormy grey to be exact.

Leo: Flaming hot red, 'cause I'm a flaming hot man.

Piper, Annabeth, Hazel and Frank: *Roll  their eyes.*

Hazel: Hmm. . .Dark purple. The colour of the eggplant.

Frank: Dark green I think? I don't have a favorite to be honest.

Jason: Sky blue.

There you have it! Those are their favorite colours.