What exactly are you trying to do? If you could be a little more specific and we might be able to help.
The facebook like button you currently have can be styled with CSS, you just need to use !important at the end of every rule before the semicolon to override the defaults. This way you can customise the colours to fit in with those used on your blog.
You can also customise the other sharing options as I have done on my CSS modded site. Click on my username to the left of this reply, select any of the articles on my blog and see the "share" tab on the left (hopefully it's working in your browser though I haven't tested it much). Hover your mouse over that and the list of sharing options should pop out. That should serve as an example of what you can do with the CSS upgrade.