Oh no they were black. I didn't notice until I started rubbing back. Again didn't take any notice. I sprayed it red and because of the colour saw the cracking lines. So rubbed it back to metal to find body filler. Got out the hammer and screw driver. Gave it a hit and out popped body filler.
Have since finished the other 3 and they are fine.
Very weird.
Now I have to find just one!