There's no reason to paint the roses red here. If you're looking for an affordable way to make your garden look unique, why not try Night Sky Petunias?
Night Sky Petuntias are a modern bread of petunias that literally look like they're dotted with stars. These beautiful flowers usually come in dark colors like blue and purple. So when the breeders grow them to have white spots, they look like they're glowing with the lights of the galaxy.
They usually come really cheap. I saw a package of them for about two dollars online, which makes them a super thrifty way to make your garden unique. All you have to do is add garden lights, and you can basically grow constellations in your backyard.