Hi again! Here are nyx lip butter swatches. They are amazing lip glosses. They smell good, they are not too sticky, and they are pigmented. The only thing that I do not like is that some of the colors are a little sheer on pigmented lips. Which are most of the lighter colors and some dark colors,raspberry tart and devils food cake. They all still look amazing though, just not as vibrant.
For darker skin tones, my favorites are the browns shades, praline and ginger snap, as well red velvet, strawberry parfait, peach cobbler, raspberry tart, and devils food cake.
Red velvet is a super pigmented bright red. I love that one the most, though!
I would not recommend fortune cookie for dark skin tones. That one is meh, but the good thing about them is that they are buildable glosses, so you can have a light swatch of color on your lips and it will not look horrible.
I would recommend these for dark skin if you want a light glossy look. For fairer skin, the dark colors will definitely be a bolder color.
Hope you are doing well!