quick color question

I just installed arcade on my vBulletin 3.8.3. One of the colors is terrible on my eyes and hard to see. I am assuming that arcade is getting it's colors from one of my existing templates. Can someone tell me where to look to find this color to change it?

Here is a link to my site. It is the bright blue that is hard to read.
http://www.snort4x4.com/forum/arcade.php?


Here is a screen shot to give you an idea.

Thanx for any help.
Trevor