Hey that's good luck! I'm lucky to run into one per Community day, minus Eevee day where I ran into 3.Did my Treecko Community Day. Got 9 shinies, which was slightly worse but still good! Didn't have great IVs though.
Also I got a shiny Roselia yesterday! And I evolved it!
Nice! I'd love to run into a shiny one of those.
Can't wait for Treecko Community day today. Hoping to evolve Grovyle into a Sceptile.