Hi, I have a directpc oval dish pointed high up at 91W and I won't be able to reach it come this winter to clean the snow off it. It's snow white in color and need to paint it black to help with the snow removal I need advice so I don't degrade any signal strength. Would any flat black in a spray can work for this, or do I need something special. Looks are not important since it's located out of anyone's sight(as per wife). Just need it black. Thanks.