haha, that is just kind of unexpected, I'd never expect a theme to do that.
Even if I discovered it, okay, I had a single forum board, I will still have an additional theming need, for example, I may prefer black color than the blue color. So, I'll try to find a black theme. But then can I get both the single and the black theme?
I changed my mind about this. The type of forum should be determined by theme selection, not a configuration page. I don't want a configuration page at all because it adds another layer of complexity. Instead, fundamental differences should be different themes and superficial differences like color and font should be done by editing the theme. Each theme should just put these basic configuration options at the top so that anyone can edit them.