Techniques
Night and low-light palettes
The same sheet rendered in the night and dark themes across looks — palettes built for projection and low-light rooms.
ddn@1New DDN source
Why use it?
A diagram projected in a dark room inverts its reading: the night palette keeps contrast where the eye expects it.
When it helps
Ops-room displays, evening reviews, any projected reading in low light.
How to read it
- Switch variants: the model is identical; ink, surface and accent move to the night scale.
- Contrast pairs stay deliberate — night is a designed palette, not an inverted filter.
What you need
- The model
- The theme declaration on the view
Things to check
- Do not screenshot a day palette into a night deck — declare the theme and re-render.
- Theme is view-level; a mixed-theme document is a deliberate choice, say so.
Scope of this diagram
The built-in theme scales (default, neutral, dark, night, forest, base); custom palettes are a publication-format concern.
Work with the converted example
- Open the viewer and select
classic_night. Inspect the rendered view and its source. - Open the designer. Keep the selected profile and inspect its legal palette and property controls.
- Change one displayed title or an appropriate data value. Apply the edit and check the resulting diagram.
- Run the verifier and review its diagnostics before moving complete content into review.
- Download your edited DDN source to retain the change.
The example uses the indentation-based ddn-next-1 dialect. The language guide explains reusable definitions, dotted data rows and explicit property blocks.