If you click the -> arrow under the color windows the selected color is assigned (see picture below). The yellow corner field (lower left) has for example RGB values of 255, 255 and 0 (full red, full green and no blue).Ĭlick on this yellow field. If you hover the mouse over a square the RGB value will be shown as a tooltip. This window thus contains a stepwise change between each of the four main colors in the corner points. The color green in the last column changes stepwise to blue. The color red changes stepwise to green in the first row, and stepwise to yellow in the first column. Most important are the colors in each of the corner fields. The left color window is divided like a chess board into 8 x 8 individual fields, each with a different color. When you go back to Format > Page > Background, you can select your custom gradient from the list. Once that's done, you can delete the rectangle.
This latter can only be adjusted by inputing a value into the number field. E.g., just draw a rectangle, then Format > Area > Gradients and set up the gradient you want for the page background. You will see that the Hue and Saturation values change from their maximum to their minimum (hue by horizontal movement and saturation by vertical movement), the brightness remains the same (see figure at left). To better understand the working of the HSB model, move the frame from left to right and top to bottom.
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