The material system is the fill and appearance engine for all vector shapes. Rather than a single flat fill color, each shape can have a material stack — an ordered list of fill layers that are composited together to produce the final surface appearance.
The material stack appears in the Properties Panel under the "Fill" section. It lists all fill layers from top to bottom. The top layer renders on top of layers below it.
+ button in the Fill section.× button on any fill layer row.Layers are composited from bottom to top. The first layer at the bottom of the stack is rendered first, and each subsequent layer composites on top of the previous result using its specified blend mode and opacity. The final composited result represents the shape's entire surface appearance.