What does "Color it in" do?

It opens the editor with the Color tool, to color the spaces yourself. Choose a palette and a color (or any color with the color picker), then click spaces. "No color" makes a space white again. On a mandala, "All around" colors the space and every copy of it around the circle. "Color it for me" colors every space from the palette (click again for other colors), then change what you like. "Clear colors" takes every color off. Undo and Redo work for colors too. Save the page.