When it comes to putting together your own funky bedroom, forget about all the normal rules of interior design. Funky decor can be anything from groovy retro colors and shapes, to a combination of decor styles that are not normally used together, such as vintage floral with contemporary chic. Follow your instincts to create a funky bedroom that will have the “wow” factor, whether it is for a child, teenager or adult. Apply a coat of paint to your walls. Bright or fluorescent colors, such as neon pink or citrus orange, are funky choices. Stencil a variety of shapes and motifs on the wall to create a personalized mural. Paint one wall and wallpaper the adjoining one. Put up wallpaper with a cool design or pattern, such as animal print or multi-colored polka dots.