Icons have been updated again. I've removed the green "plus" symbol and also made the new and hot thread icons the same, so there will no longer be a distinction there. That means the only time you'll see a blue-colored icon is when there is a new post. Any other time and it'll be a blackish gray color. Let me know your thoughts.
I tried, but my skills with photoshop are not so good. They provide me with two PSD files. One in grayscale which represents the "old post" and one in RGB that's rendered with a faint blue color which represents "new posts"...but this PSD file isn't layered and already rendered with the color in it. If you are able to alter the "new posts" PSD file, I can attach a copy for you (or others) to play with. I'll keep looking for a way to adjust it, but the way they provided it in the graphics SDK, it's not the easiest thing to change a color on and have it look reasonable.