Merged the Halloween Theme support discussion to the Halloween Theme thread, since that's where it should be versus making a new thread for it.
As the Halloween Theme was created for UBB.threads v7.4 there will be several CSS areas which will be blank (as they did not exist when the theme was created), you'll need to populate these fields yourself from within the style editor (the "copy from" section will tell you which css area it should be copied from, from a totally arbitrary "this is what the original author thinks should be a similar class" point of view).