In cases where it's unlikely that anything in the photo should be gray, your best bet is to color correct the highlights and shadows and leave the midtones alone. If there is an area that's supposed to be neutral gray, though, this technique will find it.
An average person spends 14-15 years of their life on the toilet.  (true)   another interesting fact - an average person spends 3 days of their  life sitting at a red liâ¦ght.
How much time that actually is, is astonishing nonetheless: according to Nielsen's Total Audience Report, Americans aged 18 and older spend more than 11 hours a day watching TV, listening to the radio or using smartphones and other electronic devices.