Wanting to change it up a little but keep it "all" Mopar I decided on Viper blue pearl with a mess of clear on it . If the PB4 Cosmos Blue is the color I'm thinking it is then I think your Duster would look good with it . I tried to find a color chart with a good picture of that color but I couldn't find one that "really" showed a good picture of that shade of blue . Do you have one ?