they are really hard too find but they are actually really easy to make.
all you have to do is find a pair of worn out jeans, take a cheese gratter and grate the knees (or any other area where you want a hole or ripped), then set the pants on the floor and splatter bleach on them and you can get a dark blue nail polish and also splatter that on them
i do it all the time and my pants turn out great
sounds like a do it yourself project. get some old jeans or at a thrift, or goodwill,walmart... a pint of paint(most ppl keep old paint handy for touch up jobs ask around),finger splatter them. "less is more" and start with small cuts with a knive then rip with hands