I'm putting together a bid for a commercial property in town. The company color is blue, so the lady wanted to incorporate "blue crushed glass" into the mulch beds, etc. I'm not completely sure who would sell crushed glass for a landscape. Am I just naive? Do I have to buy it at a craft store?! Anyway, if you know what she's talking about and could give me some pointers, that'd be great. Thanks in advance.