Hi, desperately hoping someone can help. I have a friend who has is leaving a rental property that has coloured render. Our local area has volcanic red mud that stains really badly. Her dogs have left mud stains on the outside window sill of the house which won't come off. On advice from a local hardware, she colour-matched some paint (not knowing that it was coloured render and not paint) which has turned out darker. She was honestly trying to do the right thing but the real estate and owners are being very nasty and are going to try and take her for repainting the whole outside of the house. She has barely the income to support her and her daughter without being taken to the cleaners (so to speak) over this.
Question: Is there anything she can do to get the paint off without bleaching the colour out of the render? Or anything else she can do?
Thanks in advance.