Do you mean airline pilots will have difficulty is distinguishing the correct handles and levers without these visual queues? LOL!
What is so "LOL" about having obvious visual and tactile queues? Have you ever been in a Jet airliner flight deck? Obviously not. Apparently, you have never been a sim when it fills smoke, you're wearing an oxygen facemask and can barely see a foot infront of you. When you do grow up and get to the stage of your career where this is the case, you will understand and appreciate the different feeling major switches, knobs and levers have. You won't switch off the anti-skid instead of lowering the landing gear, lower the speed instead of turning left, or in relation to the thread subject, won't switch the nav light system instead of switching on the landing lights.
Imbecile.