Q&A Plugin - A request and two small issues

I've set up a test site at http://ask.os.com for testing the Q&A plugin. The concept is great and for fresh install it works pretty well except for two small issues.

1st. The voting buttons on my site don't have arrows, they are just blocks. Not sure if the issue is just that the arrows are the same color as the background. If so, where can I change the button color?

2nd. Sometimes I get a "You're posting to fast. Slow down" message. How can I adjust that?

Finally a request. This plugin is perfect for a Buddypress environment. It would be great if Q&A activity can be injected into the BP activity stream and an "Ask a Question" link added to the BP ribbon.

Plugin is almost there! Thanks.