💡 Challenge

Changing the colors and fill of a Canvas App when using the default template can be cumbersome, as there is no straightforward UI for overriding the theme.

✅ Solution

Leverage the ReplaceAll function or the built-in Theme settings to quickly adjust your app’s color scheme without a custom template.

🔧 How It’s Done

Here’s how to do it:

  1. ReplaceAll
    🔸 Use the ReplaceAll function in your App’s OnStart property to override default colors.
    🔸 Provide a mapping table of old to new color values, e.g. ReplaceAll(ColorTable, "OldColor", "NewColor").
  2. Theme
    🔸 Go to App > Theme and pick a predefined theme or customize one.
    🔸 Adjust primary, secondary, and accent colors directly in the theme editor.

🎉 Result

You can instantly update the color scheme across all screens and controls in your app, ensuring a consistent and branded UI without manual edits.

🌟 Key Advantages

🔸 Fast, centralized color updates across the entire app.
🔸 No need to rebuild or apply a separate custom template.
🔸 Easily maintain consistency when adding new controls or screens.

🛠️ FAQ

1. Can I apply custom themes to existing apps without losing my current design?
Yes, but test the theme changes carefully as some custom formatting may be overridden by the new theme settings.

2. Does the ReplaceAll function method work with all control types?
ReplaceAll works with most controls, but some complex controls may require individual color property adjustments.

3. Can I save my custom theme for use in other apps?
Yes, you can export your custom theme and apply it to new Canvas Apps, ensuring brand consistency across multiple applications.

🎥 Video Tutorial

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