I have a wood box that I spray painted with a Satin Black enamel paint. I wasn't happy with the shininess of the box so I coated it with a Flat clear coat. Well, it looks like a coating of haziness that wipes off a little when dried and a little more when lightly sanded. But now the box is more of a washed out almost grey color or almost frosted black instead of the deep black that it was before being coated. Is this normal?