AdiumX is my new favorite chat client for the Mac. Open source, free, actively worked on, can theme the contacts list, message window and dock icons.
So speaking of themes, they are all simple bundles. Inside the bundle (control click, Show Contents) is a set of images and a plist (text file of XML goodness) that defines say the dock icon. So this iPod dock icon I downloaded was blinking way too fast and making me go nuts. I opened the icon pack and changed the delay to 10 seconds and it worked! Check this out:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<string>Created by Quincy</string>
<string>iPod Adiumy Remix v3.0 (motionless)</string>
Very nice design by the engineers. So while there is no user interface for this, a simple edit in BBEdit and then double clicking the icon set to load it slowed my icon way down. Thanks, guys.