{"id":15445,"date":"2026-03-18T07:01:18","date_gmt":"2026-03-17T22:01:18","guid":{"rendered":"https:\/\/m365jp.net\/?p=15445"},"modified":"2026-03-18T07:02:36","modified_gmt":"2026-03-17T22:02:36","slug":"mc1254543-power-apps-custom-theming-for-model-driven-apps-is-becoming-generally-available","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-03-18-mc1254543-power-apps-custom-theming-for-model-driven-apps-is-becoming-generally-available","title":{"rendered":"MC1254543 | Power Apps – Custom theming for model-driven apps is becoming generally available"},"content":{"rendered":"
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MC1254543 | Power Apps – Custom theming for model-driven apps is becoming generally available<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n
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Classification<\/th>\nstayInformed<\/td>\n<\/tr>\n
Last Updated<\/th>\n03\/17\/2026 21:56:35<\/td>\n<\/tr>\n
Start Time<\/th>\n03\/17\/2026 21:54:38<\/td>\n<\/tr>\n
End Time<\/th>\n04\/17\/2026 21:54:38<\/td>\n<\/tr>\n
Message Content<\/th>\nCustom theming for model-driven apps using the modern, refreshed look has been available in preview since October 2023. This capability allows organizations to align model-driven apps with their branding by customizing colors, fonts, and app header styling using the Microsoft Fluent 2 design system. As of March 31, 2026, custom theming will reach general availability.<\/p>\n

How does this affect me?<\/b>
Classic theming is not honored with the modern, refreshed look, which is becoming mandatory for model-driven apps in April 2026. The supported theming replacement with the modern look is custom modern themes, which gives makers the ability to: <\/p>\n

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  • Apply a cohesive color scheme across the app based on a single base color, including hyperlinks, primary buttons, active tab indicators, row selection, and hover effects.<\/li>\n
  • Customize the app header background and text colors, including hover, pressed, and selected states.<\/li>\n
  • Set a custom logo for the app header to reinforce organizational branding. Note: Custom logo support in the modern theme XML is currently rolling out and will be available in all regions by the end of April 2026.<\/li>\n
  • Override the default font used throughout the application.<\/li>\n<\/ul>\n

    These customizations are applied through an XML web resource and can be scoped to your environment using the Custom theme definition app setting.<\/p>\n

    What action do I need to take?<\/b>
    To take advantage of custom theming, we recommend doing the following: <\/p>\n

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    • If your organization was using classic themes, create a new custom theme XML web resource that reflects your branding. Follow the steps in the documentation to apply it to your environment.<\/li>\n
    • Update internal documentation and training materials to reference the new custom theming approach instead of classic theming.<\/li>\n
    • Report any issues or unexpected behavior through Microsoft Support so we can investigate.<\/li>\n<\/ul>\n

      If you would like more information on this feature, please visit Use modern themes in Power Apps – Power Apps. <\/a><\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30e2\u30c7\u30eb\u99c6\u52d5\u578b\u30a2\u30d7\u30ea\u306e\u30ab\u30b9\u30bf\u30e0\u30c6\u30fc\u30de\u306f\u3001\u30e2\u30c0\u30f3\u3067\u5237\u65b0\u3055\u308c\u305f\u5916\u89b3\u3092\u7528\u3044\u3066\u304a\u308a\u30012023\u5e7410\u6708\u304b\u3089\u30d7\u30ec\u30d3\u30e5\u30fc\u3067\u5229\u7528\u53ef\u80fd\u3067\u3059\u3002\u3053\u306e\u6a5f\u80fd\u306b\u3088\u308a\u3001Microsoft Fluent 2\u306e\u30c7\u30b6\u30a4\u30f3\u30b7\u30b9\u30c6\u30e0\u3092\u7528\u3044\u3066\u3001\u30e2\u30c7\u30eb\u99c6\u52d5\u578b\u30a2\u30d7\u30ea\u3092\u30d6\u30e9\u30f3\u30c9\u3068\u6574\u5408\u3055\u305b\u308b\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u30022026\u5e743\u670831\u65e5\u3088\u308a\u3001\u30ab\u30b9\u30bf\u30e0\u30c6\u30fc\u30de\u306f\u4e00\u822c\u516c\u958b\u3055\u308c\u307e\u3059\u3002<\/p>\n

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