colors in sassquatch that need swatches equivalents

Any concerns about porting some of the remaining sassquatch `vars/_core.scss` colors over to meetup-swatches? There are a few naming/usage issues we should also resolve. I'm particularly wanting to get some sort of green ported over, but might as well get the rest for cleanup.

```scss
	// red - interface red, not the red *in* the logo [wat - mikem]
	$C_red: 					#E0393E;
	$C_red_darker: 			#CC1C32;

	// blues
	// [this is more like sea blue - not dark at all - mikem]
	$C_darkblue: 				#2A9BC7;	// darkblue - links and linked things
	$C_lightblue: 				#a5c8e7; 	// brightblue - highlight borders, light blue bg

	// green - success and yes
	// [$C_yes is RED - we gotta make a decision on this - mikem]
	$C_green: 					#62AC75;

	// pink - error shading for now
	$C_pink: 					#FBE1E3;

	// yellow - highlighting. You love it.
	$C_yellow: 					#FDF77B;
```