Why is the "Assign Task" button in Microsoft planner purple?

Hi @Katie Erdmann,
Thank you for posting your question to Microsoft Q&A Forum.
The purple styling is part of a recent Microsoft Planner interface update. Microsoft has been rolling out UI refreshes across Planner (both in Teams and on the web) to align with the newer Planner design language. These updates include new icons, accent colors, and visual consistency across Microsoft 365 apps.

This update also matches other color‑related changes previously introduced in Planner (for example, changes in the colors of Completed tasks), which follow Microsoft’s internal design consistency efforts.

At this time, there is no setting to disable the new highlight color, no option to revert the button to its previous neutral appearance, and no admin control available to override the updated Planner interface styling. Microsoft has not provided any option to revert UI elements that are part of global design updates.

However, I understand that not every change works well for everyone. It’s important to be able to customize your workspace to fit your needs, and this is a valuable suggestion many users may also share. Your feedback can help prioritize this improvement and potentially bring the option back in the future. Please share your feedback directly with the Planner team through the Feedback Hub by submitting your feedback directly to Planner · Community, where Microsoft product development team can know your requirements and ideas for product improvements. The team actively monitors user input, and many improvements have been made based on community suggestions.

Note: As Microsoft Community moderators, please note that we are not involved in product design decisions and do not have direct access to the development roadmap, we want to assure you that your feedback has been acknowledged and is valued.  

In the meantime, if you see my replies bring helpful information, please kindly accept it as an answer and vote it up by your original account, which raised this question. Once marked, it will automatically pin to top. As other users will also search information in this community, your valuable vote up will definitely also help other users who have similar queries easily to find the correct channel and useful information more quickly.   

I hope this provides enough clarity and helps you stay inform with your current situation.

Thank you for your patience and your understanding. If you have any questions or need further assistance, please feel free to share them in the comments on this post so I can continue to support you. 

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