I've often thought what would happen if graffiti artists were as productive in legal art projects as they were with their tagging pursuits. Would they be successful artists?  Graffiti takes a lot of talent.  I think it would be awesome to see what would happen if that talent was used in a more productive manner. 

Graffiti is usually quite colourful and can be interesting to see.  Since it's purple week, I photographed some purple graffiti for today's prompt.  Is there purple graffiti around your neighbourhood that you could snap a shot of today?  If not, what other way could you define productive?    .