Covering my options here as it's only a budget steel Gios that's in it's original Lime green and mauve.
Needs doing and was thinking of powder coating it if I can get a good match.
FWIW the 2 Gios I have owned - both factory finish were actually different shades of blue. Just had my Aerodynamic resprayed - see gallery - by Atlantic Boulevard and the colour is nice strong blue. RAL 5005 or 5017 would both be OK IMO.
