Can a scraped off skin lesion change color and still be rough?

Depends: What kind of skin lesion? Was it scrapped off entirely? How was the scrapping done? Was there infection following the scrapping? The short answer to both parts of the question is yes, but it depends on the factors mentioned above. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, low fat milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex.