Using the plugin with dark background theme

Hello,

I am using la last WP Version and Theme Twenty Seventeen, dark mode. This means that I have a dark background. Using the plugin it brings me white background for it’s elements and dark text. Is there any way besides changing the skin (which helps only a bit) to change the plugin from “white style” to black (dark background, white text..)? Do I have to do this with css?

Thank you!

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