Bellapierre Pro Concealer Palette. Full Size. Brand new! Color correcting is a technique that has been used by make up artists for decades to banish imperfections through the use of colors that cancel each other out. The Green concealer can be used for any skin tone to cover red imperfections such as acne blemishes and rosacea. The Seashell & Yellow concealers can be used for fair and medium skin tones to cover any blue-violet imperfections such as dark under eye circles.