Almost every unknown file is treated as application/octet-stream which gets the greenish application icon which implies this file can be executed, whereas it's just an unknown file you cannot do anything with. It should get a different, less prominent icon, such as a gray one. The same is true for libraries and almost anything that is application/* isn't actually executable but the icon implies that. Reproducible: Always Steps to Reproduce: 1. Go to /usr/lib 2. Observe 3. Actual Results: It's all green and stuff Expected Results: It should be toned down gray since you cannot actually do anything with these files