A color-scheme I'm using. I'm not sure how different it is from the default Oxygen colors, but some people wanted me to share it, so here it is.
"Mac-like" is not really the point of the scheme, just the only sensible title I could come up with.
1. Go to System Settings -> Application Appearance -> Colors. Click "Get New Schemes" and search for "Mac-like gray". Click "Install".
2. Download the file from here. Open the same control panel, click "Import Scheme" and select the downloaded file.