I had seen blue mulch before at wholesale landscape supply places. Once i saw a hug bin of it. Now that RED MULCH is accepted as a normal application i guess there is no limit. I look forward to ORANGE and YELLOW mulch. And duh,....what about GREEN MULCH?? Seems so obvious. Nature has yet to produce these vibrant colors. A bold touch like the one pictured in this Crown Hts tree pit can electrifies an entire neighborhood!