Shiny Pokémon have an unnatural coloration. They are random and rare in the wild (1/8192 chance of spawning), and much sought after for their unique look. The coloration can be mild - only a few shades darker or lighter than the original - or drastic. Being shiny does not have an effect on a Pokémon's stats.
As of the 3.2.2 version of Pixelmon, you can tell if your pokemon is a shiny simply by sending it out (use the R key). If your pokemon "sparkles" then it's a shiny.
To spawn a shiny Pokémon, simply type /pokespawn <name of Pokémon> s. Example: /pokespawn mareep s
- Some times, shiny pokemon are confused with boss pokemon due to the boss pokemon's unatural coloration (an example is a blue boss ponyta, which is blue when shiny.) A good way to tell the difference without having to fight the boss is to throw a regular pokeball a it. if it is a boss, then you should get a message saying "You can not catch boss pokemon."