Unless the atoms were moving away from the observer, then they might appear a little rouged.

Aaaand, the obligatory XKCD for this: http://xkcd.com/1125/

Yes, sorry. I'm severely dyslexic. There's a limit to mechanical spelling help.

I meant the particles that are more like Han Solo and less like Darth Maul.

No worries (and now I feel bad for haranguing someone with dyslexia), I guess it just winds me up because I see it a lot - it slips past the spellcheck.