Wait a sec...
*searches Tyranitar on Bulbapedia*
I know a normal Tyranitar is green, but what is a shiny one's color scheme?
*finds out a shiny one is light brown like the one above*
OMG he drew you a-
*finds out that the color of the jewel of a shiny Tyranitar is purple*
Umm....
MCS, did you make that Tyranitar shiny or not?