OptionalcolorThe color of the area, with its opacity.
OptionalpatternThe pattern of the fill.
OptionalpatternThe share of the area that the lines or dots of the pattern cover, from 0.05 to 0.95. Only with a pattern.
OptionalpatternThe size of the pattern, as a factor; at 1 the lines (across them) or the dots are 8 pixels apart. Only with a pattern.
The style of an area (of a polygon or a circle): its color and pattern. Missing fields have their default.