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App not properly implementing Zendesk's dark mode

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  • August 6, 2025
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Alan14

Hey team! App Builder has improved by leaps and bounds since early in the EAP. Bravo!

I wanted to share that I was unable to get my newest app to adapt to Zendesk's new dark mode through prompting alone. It created the color scheme, but wasn't reading the theme or listening for a theme change, so it never actually initialized dark mode. 

I attempted to fix it by pointing the builder at the documentation at https://developer.zendesk.com/documentation/apps/app-developer-guide/dark-mode/. This was unsuccessful, as it did not update to dark mode and continued appearing in light mode.

I rolled back to a known-good version and pasted in Option 3 from the guide above to nudge it in that direction, which has worked for another app I made without App Builder. One thing I noticed when referencing the guide or parts of the guide was that the AI Agent insisted that “I notice the documentation doesn't show the colorScheme property or events that were mentioned in your guide.”

Eventually, I rolled back again and tried Option 4 specifically, and gave up on dark mode when this didn't work out as I had hoped either.

My hope here would be that App Builder is more aware of the existence of Zendesk's dark mode implementation and understands which approach to take when implementing it.

The app is 4719e034-e3fa-4b25-b487-492bc7ff1043 ("Open Ticket Context") and Zendesk has access to my account for a few days for any troubleshooting you might like to do.