To make nodebb more accessible for people with no knowledge of css it would be cool if themes could have options to customize colors or at the very least have a few preset theme colors.
like this:

selecting one of the options would change the whole color scheme of the theme, kinda like bootswatches for vanilla but added by theme makers.

vanilla and lavander are both kinda preset up for this with the use of variables.less
if you could add a way to select 1 of X amount of variable files you achieve this idea.

this would allow people to get more and easier mileage out of each theme, and help designers trying to make pay themes

this would be the simplest approach i could think of with maybe the long term goal of greater theme customizing kinda like wordpress http://codex.wordpress.org/Appearance_Customize_Screen

thanks.

im pretty sure its a compatibility thing, what if the theme your changing to doesnt have the same widget areas, since the widget areas are assigned by the theme

there is the classic theme, its a little closer to your screenshot
https://community.nodebb.org/topic/2066/nodebb-theme-classic-classic-theme-for-nodebb

this plugin is awesome but i had some thoughts and maybe a bug

• first off, there should be an option to make it first post only
• second, say i have 100 users "in" does it show them all or stop at a certain number or once it meets the width of its container? maybe make it only list 5 people then plus some more, like this
  [avatar] [avatar] [avatar] [ + 10 more people ] [ X ]
  and clicking the more brings up a popover with all "in people"

there also seems to be a bug on the user profile page where if this was used in a recent post, its displayed to both logged in and non logged in users but cant be interacted with. it doesnt display avatars, just [ + I am in! ] [X]