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A warm parchment theme for DeepSeek Harness.

The name reads as "A-div": the backslash and the division sign are the same stroke drawn two ways.

Paper-toned canvas, burnt-orange accent, ring-based depth, and a serif/sans typographic split — implemented as a client-half DSH plugin.

What it does

Redefines the DSH client's semantic colour tokens (--dsw-alias-*) plus the type stacks on body, so every surface, border, label, button, and state colour in the interface follows the palette. It also sets the serif voice on content headings and on the blank-session hero headline, and rewrites the turn-status label.

Installing the bundle is enabling it. There is no settings row and no toggle: mounting the row in the profile is the switch, and disabled: true in cordis.patch.yml is how you turn it off again.

Install

From GitHub:

dsh plugin --profile <name> add github:Age10-Moyu/dsh-adiv-theme

From a tarball, if you downloaded a .tgz release:

dsh plugin --profile <name> add ./dsh-adiv-theme-1.0.0.tgz

dsh plugin forwards to pnpm inside the profile directory, then reconciles dsh.profile.bundles against what actually installed — so the bundle joins the layer stack automatically and you do not edit the list by hand.

Then restart the profile: dsh.profile.bundles is read once at start.

To disable it again without uninstalling, add to the profile's cordis.patch.yml:

- id: dsh-adiv-theme
  disabled: true

The patch layer is hot-reloaded on long-lived surfaces, so toggling it this way should not need a restart. Changing the bundle list does.

To remove it entirely:

dsh plugin --profile <name> remove dsh-adiv-theme

Palette

Role	Light	Dark
Page	#f5f4ed Parchment	#141413 near-black
Card / surface	#ffffff / #faf9f5	#242422 / #1c1c1a
Border	rgba(20,20,19,0.07)	rgba(250,249,245,0.09)
Brand / CTA	#c96442 burnt orange	#d97757 coral
Primary text	#141413	#faf9f5
Secondary text	#5e5d59	#b0aea5
Tertiary text	#87867f	#87867f
Error	#b53333	#d97757
Success	#6b8e6b	#8fa88f
Warning	#b8860b	#d4a94a

Every neutral in the ramp carries a yellow-brown undertone; there are no cool blue-greys in the light or dark palette.

Design decisions worth knowing

Coral, not burnt orange, in dark mode. #c96442 on #141413 does not reach a comfortable contrast ratio, so the dark palette uses the lighter coral.

Warm dark surfaces are deliberately restrained. A strongly brown dark grey reads as a dirty yellow smear on many real displays. The dark steps here move toward neutral as they get darker, keeping the warmth perceptible without the cast.

Ring shadows, not drop shadows. --dsw-shadow-lv1/2 are rebuilt as 0 0 0 1px rings with a whisper-soft offset.

No fonts are bundled. The stacks name the branded serif first, so an installation that legitimately has it uses it, then fall back to Georgia and the platform UI/monospace faces.

Typography anchors on semantic elements first, and on a stable class suffix where no such element exists. The host's own classes are CSS-Modules hashes regenerated on every build, so message headings are matched as h1–h6. The blank-session hero headline is not a heading element — the host renders it as a bare <span> — so it is matched through the _headline suffix that CSS-Modules preserves. The hash prefix changes per build; the suffix does not. UI chrome keeps the sans stack.

Tolerating host drift

Three host implementation details are relied on, and none of them is a published contract:

1. the --dsw-alias-* / --dsw-static-* token names;
2. the _headline and _turnStatus CSS-Modules class suffixes;
3. the two source strings of the turn-status label.

If DeepSeek Harness changes any of them, the theme degrades rather than breaks:

• tokens renamed → the affected surface falls back to the host colour. The rest of the palette still applies.
• _headline renamed → the hero headline returns to the sans stack. Nothing else is affected.
• _turnStatus renamed, or the label reworded → the status text is left exactly as the host ships it. The shimmer colour still follows the palette.

The text pass has no blind-substring fallback on purpose: a global replacement would mangle unrelated content — paths, escape sequences, and code.

Every pass is wrapped so a failure in the copy rewrite cannot stop the stylesheet from being applied. Colours are the point of the theme; the copy is a garnish.

Scope and limitations

• This plugin styles the web client only. It has no host-side behaviour.
• Surfaces that belong to a marketing landing page — hand-drawn illustrations, alternating full-bleed light/dark chapters, oversized hero typography — have no counterpart in an agent chat interface and are intentionally not imitated.
• A design system is not a layout engine. This theme changes colour, type, and depth; it does not restructure the interface.
• The theme rewrites one label in the live DOM. That is the only place it reaches beyond styling.

License

MIT. See LICENSE.