Steps to reproduce were:
- Open File Browser, set it to Thumbnails display mode, disable filters
- Navigate to a directory with documents that have no preview
- Change Preferences > Themes > User Interface > Icon Colors > File
Folders to light and dark colors
- See how the type icons on top of the white document icon image get
changed unexpectedly. Only type icons drawn on top of folder icon
images should change.
When drawing the document type icons on top of the folder or document
image in the center of thumbnails, they would always use the folder icon
color (Preferences > Themes > User Interface > Icon Colors > File
Folders) to determine if they should be drawn with a light or a dark
color. It should only use that when drawing on top of a folder icon
image, and the color for document icon images otherwise.