The ground moves from near-black charcoal to a medium grey, and gold is replaced by a single violet accent. Structure is untouched: square corners, hairline borders, JetBrains Mono, flat surfaces.
Violet carries the same job gold did — mark, active state, one primary action per view. On the lighter ground it needs to sit a step brighter to hold contrast.
Code and input wells now recess below the page instead of rising above it — on a medium ground, darker reads as inset.