Assigning Multiple Player Style to Individual Slides within One Storyline File

Is there is a way to assign different players to different slides within one storyline file.
Example: assign "Modern Dark" to one slide and "Modern Light" to another?

I'm currently creating a custom .css file and assigning it to the story.html file. This will allow me to take full control over the look of the player.
The goal is to create two different player styles that can individually be applied to each slide within one storyline file.

I hope this makes sense.