I have text like this 

a b:\_c

a:\_c

The regex that I am using is `/:(.*)/g` , but it also captures ':\_'

**I want to achieve-->** c

**What I've got-->** :\_c

How do I exclude them?

P.S.: replaced *space* with *underscore*, for easy understanding.

EDIT: I want to capture everything behind ': '

EDIT2: here is [regexr](http://regexr.com/3gekv) with text, as u can see, it also captures ': '