Custom Theme Set as Default but Not Reflecting in Editor

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Custom Theme Set as Default but Not Reflecting in Editor

  • ONLYOFFICE 9.00
  • Docker
  • Custom theme name: "theme-asp"
  • Theme class is applied to <body> at runtime
  • Customization config correctly sets theme-asp as the default

I’ve created a custom theme called "theme-asp" and set it as the default theme using the customization config:

{"customization": {"uiTheme": "theme-asp"} }

At runtime, I verified that the theme class is applied to the body as:

htmlCopyEdit<body class="theme-asp">

However, the visual appearance and CSS variable values (like toolbar background, text colors, etc.) still reflect the default “light” theme. It seems that theme-asp is not being fully recognized, or its variables are not being applied.

Troubleshooting Done:

  1. Checked that theme-asp is applied as class to <body>.
  2. Customization config correctly uses "defaultTheme": "theme-asp".
  3. Despite this, the styles such as --toolbar-header-document, --text-toolbar-header, etc., reflect "theme-light" values.
  4. Have already restarted the doc server and cleared cache from server and also browser cache.
  5. No errors in console related to loading CSS.
  6. Not sure if the theme CSS file for theme-asp is being correctly bundled and loaded in the editor.
  7. In localStorage values are set theme-light values but the theme name is still in theme-asp.
  8. Did try changing theme from light to theme-asp manually then only its applying.
  1. Where should the custom theme variables for .theme-asp be defined so that the editor picks them up?
  2. How do I ensure the theme-asp CSS block is included in the editor build or theme bundle?
  3. Is there a way to debug whether theme-asp variables are registered or overridden at runtime?
  4. Does the editor cache previous themes from localStorage that might interfere with theme loading?