How do I change the color of objects on a page?

You can select a color for handwriting, text, highlights, and shapes using the color picker before drawing/writing.

To change the color of handwriting, text, highlights, and shapes that are already on the page, you must first select the object(s). Then tap the color picker icon at the top of the screen, and select a color for the object(s) you selected.

For a video tutorial about changing the color of objects, see Squid - Tools Overview.