First of all, I don't fully understand Suzuki's color code rules. Normally the code for a part will be for every color on the part. In the case of the fuel tank that would include colors that are on any graphics. The tank has code M18, which is 0JW Pearl Still White plus 1LE Pearl Medium Blue. But I think the tank is sold with a silver metallic stripe that is not included in M18. I see that the code for the stripe decal is A5S, which is 0JW+1LE+0FP. 0FP is Traditional Silver Metallic. So the stripe must also have some blue and white, typically around the edges. But if, as the parts listing indicates, the tank is sold with the decal, I don't understand why its code is not also A5S.