Microsoft is piloting a feature for Windows 11 that allows users to apply their selected accent color to the selection box in File Explorer, moving away from the traditional gray or white. Users can modify their accent color through Settings > Personalization > Colors, choosing either automatic selection based on their background or a manual option. Additionally, Microsoft is refining the visual aspects of progress bars in File Explorer, with the storage progress bar now in a darker blue shade and the file transfer progress bar redesigned to a flatter, darker green tone.