The color mask used to tint the node's icon. A color mask that can be used to blend the image associated with the KML node. Pixels in the image are multiplied by this color channel-by-channel. Colors in KML are specified in ABGR order. When no UX icon is specified, you can use this color to draw a placeholder for use in the UI (for example, a legend). UX icons are not pre-tinted; it is the application's responsibility to apply the tint color to the UX icon before displaying it.