LET'S MIX IT UP - Watch the colors swirl and change before your eyes as kids fuse speckles of one color into another! It's an innovative, easy, and satisfying way to mix and play with Play-Doh compound. SWIRLY MULTICOLOR EFFECTS - The little color bits of Play-Doh compound mix into cool swirly patterns as kids play, and then the 2 colors blend into a whole new color! Try the see-through roller for a cool effect.