Now that I've been using the screenplay bundle for TextMate for a while, I've gotten used to it and I must say, I truly love it. The only issue I've had was the theme's colors, which I didn't like very much. And, since I can obsess on these things, I created my own theme for the bundle and have been tweaking it over the past few days as I've worked with it. I think it's good now.
If you'd like to, you may download my theme for the screenplay plugin. Just open it and TextMate will open and accept it.