Not much good if colour-blindclick here
Now that is a cure for a problem that I never knew I had ;-)
Beam me up Scotty!.
Now that would save over-cautious employers from putting "Warning Hot Water" signs over the hot water taps. Now you will simply know whether the water is hot or not from the colour.Absolute genius
Oh Drat! Not recommended outside the USA!
I'll take two, one red for hot and the other blue for cold...
I never realised I needed this until I saw the website, how can I ever thank you.
As long as they leave the lavatory alone!!!!
So not only can you waste water you can also waste electricity...
At the same time :-)Marvellous.
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