Dude. The COLORS, man! The Colors!
The medium is oil over acrylic (I think) and the sort of Klimt-esque dress and band in the window of the door are gold-leafed origami paper cut out and applied with gel medium.
Mom has only recently started doing these wildly bright paintings, and they are just seriously amazing. This one's in my studio, and...um...dude. (Obviously I have nothing useful to say, since I keep just going "Dude.")
You can see more of Mom's art at my folks' website