In this particular case, Bill Nguyen had a whole bunch of red flags, including exiting shortly before his previous companies failed. I, for one, am not happy that investors continue to give such large amounts of money to such obvious carpetbaggers. The Bill Nguyen's of the world thrive because they are allowed to.
I agree that the whole story of Color was a "shame", but the whole thing sounded like an overhyped pipedream to most onlookers to begin with, so when it turns out that's what it was I'm not going to cry a river for the investors.
Last time I heard vague numbers thrown around, 90% of VC-funded startups fold, 9% go into some kind of functional equilibrium, and 1% make it big. Ergo, you should actually reckon on failure being the norm.
http://www.fastcompany.com/3002341/color-failed-what-happens...