The page links to a table of the 140 color names that are available in the extended HTML color set. I like having all the colors displayable in one place since it helped me to visual what they looked like. I added the black border to help them to stand out from the background.
This page links to a temperature converter that will translate from Fahrenheit to Celsius or vice versa. This would have been very convenient to have had the last time I was abroad and the hotel room was a roasting 25 degrees Celsius. Deciding it was much too hot, I dialed the thermostat down to 18 degrees Celsius and in the morning I woke up freezing in a room that turned out to be 64 degrees Fahrenheit. The picture reminds me of how I felt that morning. This page uses the picture for a background and I will never do that again. On one of my wide computer screen's, the picture is centered but all of the text is way out on the edge and on my phone, the text is illegible because it is lost in the cityscape.