I would like to switch from the Yola blog to the integrated tumblr blog. How can I change the font color of post titles? How can I make sure my posts include comments under each? And how can I add sidebar navigation of tags, archives, search, etc? I saw these things on a blog used as an example in the Yola blog post about fresh content and SEO where tumblr was recommended. But my test of this using my first tumblr post just comes up very simple and all the same font and color, etc. with ony the post showing.