I made a simple member cards for any colored site. I have made various types of colors for you to chose from.
Rename the image you wish to use to: member-card.png and upload them to the corresponding spot, it is that easy.
To upload them simply overite the member-card.png file found in: /public_html/styles/yourstyle/xenforo/overlay/
If you do not have a xenforo section skip it, and go into the overly replacing the member-card file with the one I gave you.