Garmin GML background color

 

I have been playing with adding text color to GPX files to highlight certain text. But in every case the color is on a white background which I would like to change for some text. I tried "background-color=" and "background=" which is used by several XML standards, but that does seem to work. Does anyone know the GML keyword for changing the background? Can it even be changed?

Thanks

I'm not sure it can be

I'm not sure it can be changed, but I don't know for sure.