I'm tempted to start a 5 gallon soda there's aquarium with glass bottles what color gravil shouild I use I was thinking black or gray because it would make the bottles pop, also I was thinking of getting a bottle with a bubble in it to make it look like fizz any1 have any ideas also im open to links for pictures that say something like "drink soda" not a brand for the background do u like my idea it it going to work?