Dark for me. The flow colors carry the whole chart and they read brighter against it. Did you check how the thin low-value flows hold up in light mode? That’s usually where sankeys fall apart.
Such a neat experiment in AI-assisted spatial design! Using 10 photos of a real setup to train a local model like FLUX 3 Klein is next-level prototyping.
Both options look great, but Option A totally wins on the cozy lighting front for me. Check out the post and drop your vote