Origin supports both one-color and two-color gradient fill control, which can be used for the page background or layer background of any graph, and also for the pattern color and fill color of a Column, Bar, or Area graph.
One-color gradient fill allows you to select one fill color that will blend into a grayscale color. The grayscale color is determined by the lightness setting: 0% lightness will blend the single color with black, 100% with white.
Two-color gradient fill allows you to select two fill colors and blends them into one another.
After color is selected, 17 gradient geometries exist for both one- and two-color fill, such as right-to-left, top-to-bottom, and from-center.