Color Selection: Color Palette and Eyedropper

On the lower-right side of the canvas, there are seven jars of color for you to choose from. To access more color, double tap on any of the jars to expand the color wheel.

Eyedropper: Expand the color wheel and tap on the eyedropper (color-picker) icon  to pick up any color on the canvas. Then choose any color on the canvas so the jar of color changes to the color you pick and continue drawing.