MIL mad I'm wearing black to my own wedding

Me and my fiancè's wedding theme is very Gothic. I've always been really Gothic growing up and my fiancè isn't. He's the exact opposite of me. He doesn't even have a single tattoo and wears very bright colors but he fell in love with me. Someone with tattoos and piercings and constantly wears black. I picked out the perfect black wedding dress and of course my MIL had something to say. She always has something to say about me. She already hated that our wedding was so dark and doesn't approve of my black wedding dress. My fiancè defended me and said that he knows who is is marrying and he isn't going to change me and that my dress is beautiful. My MIL says "Well why don't you drink each other's blood and summon the devil while you're at it?!" I looked right into her eyes and said "Don't threaten me with a good time. Drinking my husband's blood and partying with Satan sounds like the perfect wedding." She got mad and left. I've been dealing with this woman judging me our entire relationship and I've played nice and honestly and tired of playing nice. My husband told his mom to not come if she's just gonna cause problems and it makes me sad because she is his mom and I'm sure he wants her there. At the same time we don't want her ruining our wedding