Mouse down and move up or down. Thanks to JSO for the code and fanmusic, HumanLight, dreampaintscaper, Larry828, justjess678, chkroc and MON1 for the paintings. Here you can find the original project: http://scratch.mit.edu/projects/JSO/987851 Here the links where you can find the paintings: fanmusic: http://scratch.mit.edu/projects/fanmusic/233378 HumanLight: http://scratch.mit.edu/projects/HumanLight/1029475 Larry828: http://scratch.mit.edu/projects/Larry828/880878 justjess678: http://scratch.mit.edu/projects/justjess678/828841 chkroc: http://scratch.mit.edu/projects/chkroc/153164 MON1: http://scratch.mit.edu/projects/M0N1/864888 dreampaintscaper: http://scratch.mit.edu/projects/dreampaintscaper/411457 goch: http://scratch.mit.edu/projects/goch/743865