The flesh reddens and then blackens when potassium hydroxide solution is applied. The fruit is a berry which blackens as it ripens. Her face flickers in his vision for several minutes before the screen blackens. The group chases passers-by, blackens their faces with soot and sometimes douse them with water. The fragile ring is grey-violet or blackens. This further blackens the case again McDonald. Its surface blackens, but can be recovered by re-polishing. The lower beak blackens later by four years of age. It also blackens in the presence of certain atmospheric pollutants, although this can be reversed. It blackens 300 and 400 series and the precipitation-hardened 17-4 PH stainless steel alloys. If the screen blackens after execution, the machine is equipped with the new GTIA chip. Raised to a high enough temperature, meat blackens from burning. This blackens the clay and makes it water resistant.