Feature Request: Automatically adapt app theme color from imported logo

[Spaccesi]

Summary

When a user imports a custom logo, the app should optionally extract a dominant color from the logo and apply it to the UI theme automatically.

Possible Solution

• Use a color extraction library (e.g., palette_generator) to extract the dominant/vibrant color from the logo image.
• Prompt the user: "We detected a brand color. Apply it to the theme?"
• Ensure contrast ratio is verified before applying.

Acceptance Criteria

• When a logo is imported, a dominant color is extracted.
• User is prompted to apply the detected color.
• Contrast is validated before applying (no unreadable UI).
• User can decline and keep current theme.