I'm not entirely sure what I'm voting for by hitting "implement as is" as there are a couple of "maybe we could... or maybe we could..." and no fixed "let's do this idea"

Personally, I want my navbar to match the rest of my journal when I'm viewing my journal; I do NOT want DW to take away my prettifying options.

But I appreciate that does not make for happy fun accessibility goodness.

Isn't there already an option to view the navbar in one's own style anyway? Does that not already cover what you've suggested? And if it doesn't could that option be extended to include an option:
* force these fonts/sizes/colours on the navbar.