Matthew,
Overall, I like the new forum format a lot. It's a significant improvement over the current format.
I'd like to make one suggestion about the use of green - limit it's use to the logo and the "functional" parts of the forum. I.e. things that do something - buttons, links that highlight on mouseover, icons that are active or indicate someone is online, etc.
IMO, bright green is a great color IF it is used in moderation as an accent. By making borders and post backgrounds green, the green accents loose their impact.
Look at the Festool products. Except for the bare metal parts there are only two main colors on the products - a very light gray-beige and a blueish-black.
Everyone talks about the Festool "Green", but it is used only on the logo and the functional parts - switches, knobs, connectors, and latches. IMO, the green color's impact comes from its limited use!
I decided to try out my ideas...
This image is a screen shot of the test forum exactly the way it appears on my screen:
[attachthumb=1]
This image is a copy of the first image, except that the green border lines are changed to dark gray. What is interesting (and surprising) to me is that the green band also looks like it changed color. (The band color was NOT changed.)
[attachthumb=2]
This image is a copy of the second image except that the green band was desaturated and the luminance increased. I.e., it is actually a very light greenish gray.
[attachthumb=3]
This image is the same as the third image, but the band color is less strong:
[attachthumb=4]
To my eyes, the third or maybe the fourth image is the best. They are better because I think they are the most readable, easiest to navigate and have the most impact.
In the third and fourth images notice that the wonderful (IMO) green elements in the header are now more prominent. "FESTOOL OWNER'S GROUP" now pops out at you. Your eyes are drawn to the controls in the Domino. Notice that the green "Online" icon sticks out and other icons seem more visible. And most importantly, the text content pops out.
My personal preference is obviously the third image because it is most readable. From a pure attractiveness perspective, I find the second image to be the most attractive with the greatest impact. The fourth image is a middle ground between image 2 and 3.
Regards,
Dan.