Manually editing color of some elements on my page via CSS

Hi,

I have working on chumbajamba.lt page. I have few color problems, which I do not find how to solve:
1. How to change portfolio picture color when it flips over?
2. How to change blog post tagline Headline color & active color (when you move mose on it)?
3. From you demo I imported interesting button :) When you scroll dow blog, there comes up small box with arrow which links to the blog beginning. This also has your default color, I didn’t find how to change..
I have made changes in Theme options, and there is no more this torque color anymore, but it still show ups in these places.

4. In blog post when i put background color on mother row – it end before comments. Comments has white background and looks weird. How to apply the same color on comments section too?

Thanks a lot!

Lukas