Galvanized cable trays can turn black for several reasons, but the most common drivers are wet storage stain, harsh industrial atmospheres (especially sulfur-related), chemical exposure, and coating damage during handling or installation. The filter setting is the only option on Revit. But in real projects, many users notice the surface turning gray-black, developing black spots, or dark streaks after storage, installation, or long-term exposure. Changing the color of a cable tray in Revit requires a systematic approach to modify the appearance of the element within the project. Also the question is, how do. WALI Projector Ceiling Mount Tray, Height Adjustable Wall Mount Holder for Projectors, Hidden Cable Management, Fits Projectors up to 22lbs, 13. 6" Platform, Black (PM-005-B) Available at a lower price from other sellers that may not offer free Prime shipping. Universal Compatibility: Fits. How do you color a cable tray? How do I change the line color in Revit 2020? How do you change to black in Revit? How do you change the color of a floor in Revit? How do you bend a cable rack? How do you change system type in Revit? How do you change the duct type in Revit? How do I change system.