Best applied over 4001 Sealer White or 4002 Sealer Dark. Full coverage requires 3 � 4 coats over sealer base. Lighter colors are best over Sealer White. 4308 Pearl Blue, 4311 Pearl Plum, 4312 Pearl Purple and 4314 Pearl Black may be applied over either although applying over 4002 Sealer Dark increases the color�s reflective effect. Apply 4302 Pearl Silver over either Sealer Dark or a grey sealer made by mixing Sealer White & Dark. 4301 Pearl White has an almond cast. For a clean, white pearl, use 4001 Sealer White top-coated with 3 � 4 coats of 4501 Hot Rod Sparkle White.