I've seen new ChromeCast icons around:
And I'd really like to use them in my app, as the old icon is completely transparent in the action bar when casting is enabled (the on-state icon is the same color as my action bar).
I'm under the impression that these icons come from the MediaRouter library, and I have a feeling it hasn't been updated with these new icons yet..
Is there a way I can override the icons in the CastCompanionLibrary?