Clementoni Pixel Jigsaw Puzzle - 1500 Piece - Colorboom Collection - (31689)A flood of colours within this interesting puzzle contains a variety of colours but also a three dimensional look with some blocks higher or lower than others. So, not only are there colours to sort but also shadows changing the colours on the pieces. While this isnt an exact gradient, there are variations within the colour families that make this more reasonable to do. Some strips like the orange strip mixed with the pinks reds and the violet between