Abstract: An apparatus for tinting caulk which has been prepackaged in cylindrical caulking tubes having a removable piston in one end of the tube and a fixed nozzle extending from the opposite end. The apparatus being securable in a reciprocating mixer of the type used for mixing paint. The apparatus has a generally cylindrical face member with a plurality of flanges extending perpendicular from the base member and each engageable with the bottom end of a caulking tube to position the tube perpendicular to the base member. A top member is provided with a plurality of holes defined therein through which the nozzles on the top end of the caulking tubes will extend and which are positionable in registry with the flanges on the base member so as to hold the caulking tubes from both the top and the bottom. A plurality of pivotal rods extend from the base member to the top member and are securable to the top member to hold the top member rigid relative to the bottom member and maintain the caulking tubes in position.