[typo] Change the default theme

[hemant kumar]

I will be possibly running a system of typo blogs, so I was just wondering
how can I replace the default azure theme with lucid or some other theme
permanently.

No, I am not talking about, user option of going to theme tab and chaning
the theme.I want to change the default theme.One option I can see, is update
blogs table and put theme = "lucid" or something like that.

But, where does typo picks the default theme from?