The color and opacity settings for each of the tools below can be set when the tool is first used. Alternatively, after you draw on an image, if you click on the completed object the color picker window will appear. The color and opacity of both the edge (left side) and the center (right) area can be set. The opacity bar is on the bottom of the color popup window and can be dragged to the left (transparent) or right (opaque).
[table id=4 /]