An object specifying the default properties for RadialGradients using in fills patterns.
See the dojox/gfx/_gfxBidiSupport.defaultRadialGradient reference documentation for more information.
An array of colors at given offsets (from the center of the radial gradient). The center is defined at offest 0 with the outer edge of the gradient at offset 1. Default value, [{ offset: 0, color: 'black'},{offset: 1, color: 'white'}], is a gradient from black to white.
The X coordinate of the center of the radial gradient, default value 0.
The Y coordinate of the center of the radial gradient, default value 0.