This is the predefined color syntax by the Color-Filter in the File-manager Q-Dir, you can disable this in Explorer View Settings.
1.) ... Color Filter in Explorer View!
2.) ... Disable List View Tool Tips!
You also can define more Color-Filter settings, click on the menu item Extras > ... more options , and click the Colors tab.
See also: filter the Files in Q-dir || a single tree that can be used for all panes || Q-Dir and new and old Tree-View
Please always use the latest version of ... The Windows Filemanager Q-Dir!
Main Menu ► Extras ► System ► Tooltips
FAQ 2: Updated on: April 16th 2018 06:07