# widget-/slack-black-theme

A darker, more contrasty, Slack theme.

Repository: https://github.com/widget-/slack-black-theme
Canonical: https://ross.abutalabs.com/products/slack-black-theme
Language: CSS
License: Apache-2.0
License Family: permissive
Topics: slack-theme, dark-theme, slack, slack-hacks
Archived: true
Last push: 2019-07-30T20:07:30+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3459, "days_push": 2591, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1719, forks 387 (observed 2026-08-28T04:05:26.648520+00:00)

## What it is
A CSS-based dark theme for the Slack desktop application, installed by injecting custom styles into Slack's local app files. It provides several color scheme presets and lets users customize theme colors via CSS variables.

## Use cases
- make Slack dark with higher contrast
- apply a custom dark theme to the Slack desktop app
- customize Slack colors with CSS variables
- reduce eye strain from Slack's light theme
- try alternative Slack color schemes like One Dark

## When to choose
- you use an older Slack desktop version and want a true dark theme
- you want full CSS-level control over Slack's appearance

## When to avoid
- you use a recent Slack version where the injection hack no longer works
- you don't want to re-apply the hack after every Slack update
- you only need Slack's built-in dark mode

## Facets
- artifact type: plugin
- maturity: abandoned
- function: theme, css-framework
- domain: developer-tools, web-design
- platform: windows
- tags: slack, dark-theme, css-injection, customization, macos, linux, desktop

## Member repositories
- widget-/slack-black-theme (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:26.648520+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:34:08.866973+00:00, confidence not recorded.
  - readme: https://github.com/widget-/slack-black-theme (fetched 2026-08-28T04:05:26.648520+00:00, sha d8704f06439a)
- Data as of 2026-08-30T08:39:29.467469+00:00.