Thank you for your question.
I can't reproduce the described issue. I tried to the change the accent color with the theme editor and it was applied successfully to the radio buttons inside the DataForm as you can see from the attached screenshot.
One reason for such difference that you observe could be that the Android version selected in your Theme editor is different from the one of your device/emulator.
If the issue persists, please give us more information about the observed occurrence of the issue (including device model, api version, etc. anything that can help) and/or send us a sample project that we can use to reproduce it.
Thank you for your cooperation.
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