The other day I was cleaning my counter tops with windex. There was a couple red wine (cabernet sauvignon if it makes a difference) stains from the night before and the stains turned an gray/blue color upon being sprayed with the windex. What is the cause of the color change? Is it simply the blue windex mixing with the red wine?



  • 2
    $\begingroup$ Arguably, most organic colors are pH indicators. $\endgroup$ – Ivan Neretin Oct 22 '17 at 7:21
  • $\begingroup$ Red cabbage soup goes through similar color changes (though I'm not sure if it is best served with meat or with fish). $\endgroup$ – DrMoishe Pippik Oct 23 '17 at 22:26

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.