Spriggan form not turning blue with cold nodes

In 1.0 I played a frostbite spriggan, and the spriggan form turned from green to blue … An icy looking spriggan form. For some reason in 1.1 tho my spriggan form just stays the default green. My totems and vines have turned icy blue, but spriggan form has not. I am taking the cold nodes in every skill possible… Is this a bug? What exactly is supposed to turn the spriggan forms appearance from green to icy and blue? If not for the cold nodes in skill tress…