[Panrock]

That's right. In the case of a dismounted TV22 mask, I would match the original shade as closely as possible using light puffs from a distance of acrylic spray - building the correct shade up from different pale colours as a matt surface. Mere remote puffs are involved, mixing the shades. Good, even, lighting is important to judge the final shade.

One of the spray cans used would always be White Primer. Apart from lightening the shade, this has a mild filling effect on any blemishes. It's most important never to apply a heavy coat.

Steve