Go ahead and split the room, do one black the other white. Use helium filled balloons for the ceiling. Light pink for heaven and blood red for hell. Use white feather boas for the heaven and accent with silver. Serve light colored foods like frosted angelfood cake and pink punch. Use crystal dishes with twinkle lights and candles.
For dark side, Red punch, chocolate strawberries, etc. Use red linens and black dishes with black and red candles and use heavy iron scrolled candle holders. Buy the fake electric torches with the fabric and fan for flames and hang on walls.
Buy gossimar from shindigz.com to cover the walls. Light white or silver for good side and red or a stone dungeon type print for the bad. Hope this gets you started! Have a sinfully, good time.
