My advice is never invent the wheel, just use whats already been done and successful. With that I use these sites to look at screen shots of movie captures.
If there is an image I like, I save it and then run it in https://www.canva.com/color-palette/
May not be an exact match but it will get you started on a color scheme that works well.
Very helpful @Chip-Valecek... thanks for sharing.