So at the moment I am hunting Skitty with the DexNav. If I get a shiny, will Skitty's tail be shiny when it's sticking out of the grass?
While Dexnav shiny hunting, a shiny Pokemon's tail will not appear shiny when it is sticking out of the grass.
Hope this helps!
A random Youtube video I found
(Warning: There is a bit of inappropriate language in this video.)