For Chrome SENMM, you\'re going to have to buy Vallejo.. Here\'s why: GW\'s paints are too bright and close to the priamry colors, especially their blues. The blues they sell are more like Cyan, which if you were to look at, looks greenish. Thus, you would have to add a bit of red or purple to get a perfect tone for the sky... but that bit would probably be measured out in Parts per Million as it\'s not that much, but it is decernable....