I took me until White to find and catch a shiny. A shiny Purrloin. In Reborn I was surprised how common the shinies were relatively to official releases. I killed the first two accidentally, a Spinarak then a Rattatta, but I caught the next three ones Hoothoot, Oddish, and Scatterbug. I don't use any of the three. I've always wanted a shiny Zangoose