not sure what colour mine is, but the previous owner said he changed the thermostat anyway.........
I feel a bit reassured any way, thanks.....
one other thing i have noticed about the car is that it sits a bit nose up. Is is normal for the rear suspension to drop over the years or is this something to be worried about too. I have contemplated replacing the front springs for some 40-50mm lowered ones to level it out?
see new thread titled stance