void overrideDefaultAnnoColor(long colorRef)
This method sets the current annotation color for the layer to colorRef, where colorRef is an WINDOWS COLORREF value. A COLORREF value can be defined using the WINDOWS RGB macro, as follows:
COLORREF colorRef = RGB(r, g, b)
where r, g, and b are byte values between 0 and 255.
The color defined via this method will be used during all subsequent calls to doAnnotation for this layer.