Paint to Compare
Selected objects can
be painted with any of four different colors by pressing the desired color swatch
button in the
toolbar:
- Select the objects of interest, so that
they are marked in red.
- Press any of the color swatch buttons in the toolbar.
- All the objects marked in red will be painted with that color.
- Repeat these steps for other objects or group of objects as desired...

The paint remains until it is either overpainted with a different color, or all the
coloring is reset by pressing the "Reset Colors" button in the toolbar.
Because of its permanent nature, painting is well suited for comparing objects:
paint a few objects with one color and then use a different color to paint the objects
that you want to compare.
