Tint portions of fondant violet, green, red, orange, yellow and black. For hat brim, roll out green fondant 1/8 in. thick; cut a 1 in. diameter circle. For top of hat, shape a 3/4 in. high green tapered cone, 3/4 in. wide at top, tapering to 5/8 in. wide at bottom; attach to brim with damp brush. For hat band, roll a 1/8 in. rope of yellow fondant; wrap around hat, attaching with damp brush.