The screenshot on the right is the color chart that pops up when you click
on a color icon in the Page Properties window. You can choose your color in
several different ways. You can click anywhere within the rainbow window to
select a color then click anywhere in the bar below it to change the shading
of the color you have chosen. You can choose from one of the Predefined
Colors, or you can choose the Last-picked color which is shown on that
button. You can also enter the Hex code or the name of the color. And
finally you can adjust the Hue, Saturation and Brightness, also the Red,
Green and Blue content. Once you are satisfied with the color you have
chosen just click the OK button and you are done.