Any-Color Caulk. OSI QUAD is a premium exterior sealant that sticks to wet surfaces, does not accumulate dust, and “self-tools” into a concave shape, says the maker. It comes in 350 standard hues and can be formulated to match just about any color. The company offers a smartphone app that includes a database of standard window, door, and siding colors. A 10-ounce cartridge of OSI QUAD costs about $5.50. Henkel Corp., 800/624-7767,

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