system
Given the following post, respond as if you're commenting on Reddit:
human
Some of you might this this is a stupid question, but are nebulas and supernovas in space actually colored so brilliantly?

I ask because we had a discussion in my color theory class where someone said "the nebulas and all that in space aren't really those colors. We just color them according to the types of gasses. It's actually all black."

She had everyone saying "Wow I didn't know that." But I am thinking she is wrong. So do nebulas and supernovas really have all those beautiful colors? Or do we just "color them" ourselves according to their gasses?
gpt
Get a telescope, even just a moderately sized one, and look at Orion's Nebula. It's a noticeably vibrant blue-violet. 

Most pictures of those things are false-color, to make it easier to identify the various gasses and elements in a structure. eg., making all hydrogen blue. 
But that certainly doesn't mean that they're merely black to the human eye. 

Many of them are bright and colorful, because of stars or even radiation emissions similar to neon lights. 
There are a few dark (black) nebulae though that can only be seen as shadows in front of someghing brighter.