lucy24 - 2:06 am on Nov 30, 2012 (gmt 0)

You can achieve it yourself by adding the query

?highlight=msg{postnumber}

to the URL. Even works in thread-initial posts and your own posts, if you want to be doubly colorful. I discovered it by accident. Like this:

[webmasterworld.com...]

When it doesn't work it means you have made the same mistake I chronically make: & in place of ? Oops.