Fix dark mode unreadability for auth sections and polymorphic dropdowns

[Copilot]

In dark mode, the expanded authentication section and oneOf/anyOf discriminator dropdowns render with near-white backgrounds, making light-colored text completely unreadable.

Root Causes

• Auth section / nested backgrounds: DARK_THEME_OPTIONS.colors.gray was set to #FAFAFA/#F5F5F5 — identical to the light theme defaults. Redoc's SecuritiesColumn (expanded auth), Uc (nested content areas), and Qc (operation buttons) all derive their backgrounds from these values.
• Polymorphic dropdown: Redoc's Dropdown styled-component has background: white hardcoded — not overridable via theme options, requires a CSS override.

Changes

• redocData.ts — Replace near-white gray values in DARK_THEME_OPTIONS with actual dark colors:

  + surface: 'rgb(36, 37, 38)',   // added to DOCUSAURUS.dark
  
    gray: {
  -   50: '#FAFAFA',
  -   100: '#F5F5F5',
  +   50: DOCUSAURUS.dark.backgroundColor,   // rgb(24, 25, 26)
  +   100: DOCUSAURUS.dark.surface,           // rgb(36, 37, 38)
    },

• styles.css — Add a dark-mode CSS override targeting the dropdown container (identified by its child select.dropdown-select) to override the hardcoded white background:

  html[data-theme='dark'] .redocusaurus :has(> select.dropdown-select) {
    background-color: var(--ifm-background-surface-color);
    color: var(--ifm-font-color-base);
    border-color: var(--ifm-toc-border-color);
  }

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/repos/Redocly/redoc/contents/src/common-elements
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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Project	Deployment	Actions	Updated (UTC)
redocusaurus	Error		Mar 30, 2026 10:32pm