Was bored, so I decided to make teams out of each of the official Pokedex colors (even though some of those aren't as accurate as they should be). Didn't include shiny Pokemon, or put Pokemon in a different category even if they clearly should be.
Red - Magikarp, Scizor, Latias, Rotom-W, Tyrantrum, Incineroar
Blue - A-Ninetales, Azumarill, Heracross, Altaria, Lucario, Hydreigon
Yellow - Raichu, Ninetales, Ampharos, Uxie, Archeops, Mimikyu
Green - Tyranitar, Sceptile, Breloom, Tropius, Rayquaza, Hawlucha
Black - Snorlax, Umbreon, Mawile, Sigilyph, Chandelure, Pyukumuku
Brown - Pidgeot, A-Raichu, Lopunny, Beheeyem, Pyroar, Decidueye
Purple - Gengar, A-Marowak, Starmie, Crobat, Drifblim, Tsareena
Gray - Steelix, Aggron, Armaldo, Zoroark, Cincinno, Espurr
White - Butterfree, Gardevoir, Absol, Togekiss, Froslass, Meowstic-F
Pink - Clefable, Mew, Slowking, Blissey, Milotic, Audino
Blue is probably my favorite, but it was also the easiest of the bunch. Pleasantly surprised by my purple and white teams though- didn't think I'd have enough to pick from.