Select the pen size using the slider bar. Select either Color or Trace mode using the radio buttons.
Color just colors solid.
Select a color to start with from the palette and go. If you don't like what you've colored, color over it with white. Paste in the menu bar, and voila. Crop the coloring page out of the rest of the pasted picture. This coloring book is best viewed at 1024 x 768 resolution.