Darth, Not real sure, looks like it is a moulded fibreglass type with white pigment I think. Was rather dusty crumbly and sanded back to a dull grey/yellow colour .
Was thinking, a brush on gel coat white which I have????
Update


Just spoke to air-command in South Aus. Very helpful service division

Acrylic white spray paint is the go. Prepsol to clean up first and paint.