numnum - 5:00 pm on Oct 29, 2011 (gmt 0)
For the record, the hover color on my Adsense text ads is red. (I see no distinct hover color on the URL links or on my my Adlink units.)
Otherwise, I use orange as the hover color throughout my site, and the red that Google has chosen for its as at my site is close enough to orange that it doesn't bug me too much. (Better than pink -- ouch!) But of course I'd rather they match.