I want to change the color of the previous color.
Directly looking for professional cleaning company to clean up.
Another effective treatment is to mix 1 tablespoon of oxalic acid and 0.5 liter of water into a solution and then wipe the stain with a cloth dipped in the solution. Finally, dry the area and wax it as needed. WARNING: Oxalic acid is toxic and should be used with rubber gloves and be careful.
Grind the dry paint with a paint scraper. Wipe stains with a cloth or sponge dipped in warm soapy water.