Icon color

[IlanVivanco]

Hi there!

First of all, awesome job! I've just stumbled upon this repo, and I think I'll fully adopt it. Love the idea.

Now I open this issue because I think it'd be great to have the option to remove the color from the smiley face icon in order to match most themes out there.
I'd reckon is not that invasive, but I'd prefer to keep it simple and match all other icons.

Ref: