They are just stone washed to make them look that way...
I get it... Micro-machines, eh? What are those being used for? And do you have an opinion on how soon we will see nano-computers?
Do you think that a certain commentator on shamelessness might be hiding something?
Do you think this person's equating irrational posting exuberance with the seven deadlies is showing some severe emotional and intellectual depravity?
Coincidence, or something more sinister?