Hi markusrehkopp,

You just need to install Main Demo content:

 

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and then go to Laborator > Theme Options > Theme Styling > Custom Skin, and activate Dark Skin.

 

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Also in this link you can find our Dark Slider, so you just need to import it on the Revolution Slider.

P.S: Note that the answer may already be posted so search within the forum before asking a question, there is a chance that you will find the same question answered.

Thanks for your understanding and have a great weekend!