Paint over existing "Pearl White" paint?

car "pearl white" colored has scratches , faded little. cannot paint individual spots pearl white , have paint whole area (typical pearl white problem won't match color of rest of area) costly. possible sand existing paint (whole body) little , apply layer of "white" or other near match color over/on existing paint scratches , fades disappear? (just considering existing paint primer)

my car "pearl white" colored has scratches , faded little. cannot paint individual spots pearl white , have paint whole area (typical pearl white problem won't match color of rest of area) costly. possible sand existing...

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