Hi Phyllis, Glad to comment on this. My tiles looked like this too - any tiles that were pure white stayed white, while any with even a bit of grey veining went really dark. That contrast while wet made me REALLY nervous. But after some time, they all looked beautiful again. One further comment - I hand picked each and every tile hoping for a beautiful installation. It sounds like you may have taken that extra effort too. I would do what you are doing - just watch each day and I expect you'll find the tiles getting lighter and lighter. Once your fears have calmed, just start in again and you'll be rewarded with a wonderful backsplash!!

Getting Great Stuff foam off your hands can be challenging, but here are a few methods you can try: Use soap and water: Try washing your hands with soap and water, as this may be enough to remove the foam. Use warm water and lather your hands with soap, then scrub the foam off your skin. Use acetone or nail polish remover: Acetone can dissolve Great Stuff foam. Apply some acetone or nail polish remover to a cloth or cotton ball and rub it onto the foam residue on your hands. Be sure to wash your hands thoroughly with soap and water after using acetone. Use a pumice stone: A pumice stone can help scrub the foam off your hands. Wet the stone and rub it over the foam residue in a circular motion. This may take some time, but it can be effective.

zeebo, On re-reading, I think that I overdid the issue of getting back at your stepdad. The point that I meant to make, was that thermostats, etc. don't bite. It was stepdad that took a bite out of your psyche, years ago and the scars remain. It isn't thermostats that bite - it's stepdads (and others). Now - don't let a simple little thing like a mechanism, electronic device like a thermostat continue to get you all bent out of shape - the real biter is long gone. So - bury him, O.K.? Teach yourself, well, re-teach yourself, that thermostats aren't to be avoided/feared/whatever. I'm pleased that you have managed to get him, well, at least half-way buried, as far as a lasting influence in your life is concerned. As for concern with sticking our nose into the lives of others, being kind to your Mom by helping her, if it can be done easily and gently, to do some re-orienting of the way that she does things in her life might be helpful to her. In a psychic way, as well as the practical one of possibly helping her avoid a fall, for her life might well be happier if she can shake off the voice of the ghost of your stepfather - he may be long dead, but she hasn't got him well and truly buried, either, it seems to me. Or why wouldn't she run her life now like she did, in a more "reasonable" fashion, before he appeared on the scene? Help her become "modern" - it's the thing for women to be more independent, right? In conclusion, I hope that you can forgive me for sticking my nose into your life. I hope that you and yours have a great summer. ole joyful

I highly doubt there are going to be relays and contacts involved a recessed light as sailor86 suggests. Remove the fixture, and inspect it and all splices and connections for signs of arcing. If it persists, I'd just replace the fixture. On a side note, I did have some Halo recessed can that made clicking noises as the housing cooled after I turned them off. It bothered me so much that I just replaced the fixtures eventually.