LoL luck improved after passing on the rock, gasp does this mean all those chain letters saying you'd have bad luck if you didn't pass them on were also true O_O XD

Sounds like an entertaining game, I've heard of similar (though the friends that played it were geocaching and/or looking for these little disc things with qr codes or something on them) but don't recall seeing any painted rocks around (or possibly have but probably left them there assuming they were decorative and meant to be there).