Soak a cloth in turpentine.
Blot the lacquer stain with the turpentine, working from the edges of the stain toward the center. If the lacquer stain is new and still wet, you will be able to remove much of the stain this way. Use a different portion of the cloth as soon as it becomes covered in lacquer paint. Be careful not to drag a lacquer-filled cloth over the carpet, as this can spread the stain. Use as many cloths and as much turpentine as needed to clean the carpet.
Dab a dry-cleaning solution on the carpet to remove any lacquer residue left after the acetone treatment. The dry-cleaning solution will work to remove the dye residue.
Mix 2 drops liquid dish soap with 1 cup lukewarm water. Blot the soapy residue over the area to neutralize the remaining turpentine and dry-cleaning solution. Use a cloth to put pressure on the area to work the liquid deep into the carpet.
Mix 1 teaspoon white vinegar with 1/4 cup water. The white vinegar will help neutralize the liquid dish soap residue. Mist the solution over the area with a spray bottle and blot dry. Continue until the soap residue is gone.
Mist clear water over the area to remove the white vinegar residue. Blot the area dry and repeat until the carpet it rinsed and relatively dry.