Hi, thank you for your kind words!
For the color palettes, I use a lot of references. I usually use many references at once while drawing. one for shadows, one for leaves, and one for lighting, and so on, then combine them into one artwork.
I never use the eyedropper tool from the references because I want to train my color sense. If I see a color combination I really like, I try to find the colors manually instead.
I don't use preset palettes either, and yes, you can say I go by vibes + reference images 😁
I make sure the images have a similar vibe. For example, if I want to draw a night scene, I'll look for night scene photos or artworks as references. Hope this helps!