Picking candle, background and footprint colors one chart at a time takes a while, and after a theme change they no longer go well together.
The agent does it in one message on all your open charts and saves the look as a template.
This is a good place to start: you don't need market data, and you see the result right away.
Switch my charts to a light background. Pick candle and footprint colors that stay readable on it and apply this look to all my open charts. Save it as a template called "Morning", colors only, no indicators. Tell me what you changed.
You can swap in any background and template name.
What happens
The agent changes one chart, copies the look to the others and saves the template. Instruments, time frames and indicators stay as they were.
The chart before:

And after:

The agent described what it did:
Switch my charts to a light background. Pick candle and footprint colors that stay readable on it and apply this look to all my open charts. Save it as a template called "Morning", colors only, no indicators. Tell me what you changed.
Applied the palette to all 4 open charts:
- Almost white background and a subtle gray grid.
- Teal up candles, red down candles.
- Dark labels and footprint numbers, light blue volume fill, high-contrast imbalances.
Saved the "Morning" template with the appearance applied, without indicators, drawings or time frame. Existing indicators and chart modes are kept.
You can adjust the colors in plain words: "softer green", "less contrast". To put everything back, one sentence is enough: "undo all of that".
undo all of that
Undid everything: restored the previous colors on all four charts and deleted the "Morning" template I created.