5
I prefer to keep my sites focused with the forums as the highlight, not the buttons.
Soo...I'd like to have buttons that are in step with the theme, especially with color and size.
Buttons that glare out at you are amateurish looking at best, and take away from a professional site appearance.
The green buttons are fine with a green site, if there are other graphic elements with similar size, text, color, and overall theme views. I definitely think the green buttons and the big blue buttons look out of place on this site.
The little envelopes are fine, because they're low-keyed and don't jump out at user when they view the boards.