File size is low because it doesn't have any music since it's just a simple game
since I can't get them on the game I'll put all the controls and stuff here
Controls:
Up - Zoom out
Down - Zoom in
Mouse wheel scroll down - Zoom out
Mouse wheel scroll up - Zoom in
Right - Bring up colour palette
Left - Take away colour palette
Delete - Clear whole screen
Z - Undo
W, A, S, D - Move about
Left mouse - Draw
I suggest you mess about before drawing anything good. The only way to save the work is by print screening it.
I started off just learning how to make a flash where you could draw lines and then I decided to turn it into a game.
edit: got the icon on here thanks to Darkside7000