same image change only the wall surface colors 1 upper floor walls change from current tone to a slightly darker cool grey white with a very subtle grey undertone warmer than pure white but cooler than current approximately hex d8d4ce 2 lower floor concrete base walls change to a noticeably darker cool grey beige approximately 25 darker than current upper floor tone with a fine rough mineral render texture stucco fine grain 1 5mm both tones must read as cooler more neutral avoiding warm or yellow undertones the contrast between upper and lower must be clearly visible keep absolutely everything else completely untouched louvres window openings shadow reveals curtains vegetation sky lighting shadows furniture pool deck geometry perspective every single other pixel must remain untouched output must maintain identical pixel perfect quality to the input image same sharpness same contrast same saturation same noise level
