[Plugin: Ninja Announcements] Feature Request – Color Scheme?

Glad you like the plugin. You can style it to look however you like.

Advanced Styling: per https://wpninjas.net/plugins/ninja-announcements/

As you can see from the screenshots in the section above, the default and manual locations come with a default style applied to them. These styles are located in the ninja_annc/css/ninja_annc_display.css file. If you would like to overwrite these default styles, you can do so by styling the id of the container div. This div will always have an id of: ninja_annc_3 where 3 is the id of the announcement you want to style. This id number can be found at the top of each announcement’s edit page. We highly recommend that you change this in your own stylesheet, as future versions of this plugin will likely overwrite the display css file.

Hope that helps.