There is another alternative, lighting mods. We have found two makers that have made lighting mods that will work in Midnight Hollow.
Note: You should always be careful when adding mods to your game, whenever there is an update for the game these tend to break and prevent your game from loading. Please always read the instructions that come with any mods that you download.
@cinderellimouse let me know about this one, the person in this forum thread:
http://forum.thesims3.com/jforum/posts/list/75/713328.page had great success in Midnight Hollow (thread has several pictures on how it looks and a download link)
These mods are used by our very own @Moza_Jf http://brntwaffles.tumblr.com/tagged/lighting-mod and worked for her in Midnight Hollow. There are many many options for you to choose from, you can only have 1 lighting mod at a time in your game though. Make sure to read the instructions!