According to "Name That Color", your color is (almost) "Moss Green". :)
They should have the color change on click, save some refreshes. It's using JavaScript anyway.
I had thought about that, and/or have it show information about the colour, but decided against it in the end as I really like the single purpose nature of it.
I've also always quite liked the thought of people loading the site for the first time and not being sure if it's finished loading as nothing appears but the background colour, so then refreshing to reload the site, only to see the colour change and realise that the site is exactly what it says it is.
I've always wondered if the HN Topbar color option somehow influenced my subconscious...
My random color was #A7D6AE
http://www.colorhexa.com/a7d6ae
Not bad I presume... Maybe i should just do this from now on.