Add support for label colors in bundle titles

[SteveShaffer]

Fixes #12

Looks like this:

Includes a setting to turn on/offf

[yoiang]

This is a lovely change, same with #64. Are there any plans on merging either?

[tmenier]

Agreed! Would love to see this available in the extension.

[leggett]

Good stuff here... I'm going to add this to Simplify Gmail v3 which is about to go out to all users with bundles and much more.

I'm also applying the color to the icon and I'm going to try and find which color (the label text color or the label color itself) is darker for the icon so it isn't near-invisible.

Here is how it looks right now on local:

[SteveShaffer]

Yay! As a simplify user I am SUPER HAPPY to hear this!

[tmenier]

@leggett Any updates on the general release of v3? Interested in trying but I'd rather wait until it's out of beta if that's soon. Thanks!

[leggett]

I just pushed it to Chrome this morning (still waiting for approval). Safari and Firefox need a little more testing (1 week max).