The hosts likeness in some stylized way could be part of the logo, but that's just one idea.
EDIT: So far everyone has used the YouTube play icon. Thats nice, but we would love to see more variance. Maybe try something different. Also: We work online and on YouTube, so using a TV in the design is a little to old school for us.
ALSO: It would be big plus, if the logo has an element, that could be switched depending on topic. So maybe it has an icon for when I talk about politics, one if I talk about YouTube and another one if I stream video games on Twitch,...
You could also play with the "bubble" in the name, as in "this channel is going to pop your filter bubble", or a speech bubble, but this is also just an idea and not really the focus. Just if you think of something great.
As for colors - we are looking for something more "grown up", it could be whatever you think fits - but color is good.
As this is for video content - so if the logo could later be animated for an intro, that would be a plus.