Generates a random color for all proteins in query_names,
        stores these in a dict.

def make_protein_arrow_color_dict(self, query_names):

        '''
        Generates a random color for all proteins in query_names,
        stores these in a dict.
        '''

        protein_arrow_color_dict = dict()

        for protein in self.query_names:
            protein_arrow_color_dict[protein] = (random(), random(), random())

        return protein_arrow_color_dict