New skin option in theme's ACP page (default & dark skins available now).
Theme ACP settings page modified to use NodeBB's recommended settings (how it's saved in DB).
Login and Register pages simplified.
You can check out the dark skin at https://pichalite.com
These are not bootswatch skins so, no additional CSS added. Skins are managed by extracting colors into less variables and different values set to these variables based on skin selection. As most of the color extraction is already done adding new skin options will be easy now.
As the theme's ACP settings page is changed to save settings in a different format, you will have to re-enable any options you have set before upgrade (menu in header.. etc).
As mentioned, skins option is set by modifying a less variable in the theme's less file under node_modules folder, this setting will be lost during future theme upgrades. Although the setting is saved in the database, NodeBB currently does not have a hook to be called by the theme to set the skin before less is parsed to css.
Sent a PR to NodeBB to add a hook. If accepted this should be available in the next NodeBB release.
Dark skin screenshots: