Hello!

Would be cool if support could be added for rgba(). E.g: pastel "rgba(0, 0, 0, 0.1)". Could perhaps output something like this:

Name: black                    
Hex: #000000  
RGB: rgb(0, 0, 0)              
RGBA: rgba(0, 0, 0, 0.1)            
HSL: hsl(0, 0.0%, 0.0%)        
Opacity: 0.1

Backstory is that I find myself copying colors from design tools which can give my something rgba values in my clipboard. Would be nice to use directly with pastel without changing the output from the clipboard.