Cable tray colors in Revit can be modified using Object Styles, materials, and view filters, with options for project-wide or view-specific changes.

Changing Cable Tray Color Project-Wide

1. Select Object Styles: Go to the Manage tab → Object Styles → Model Objects tab. Locate Cable Tray and click the color box to choose a new color. This change affects all cable trays in the project .
2. Apply Materials: If the color does not appear in 3D views or exports, assign a material to the cable tray. Create a new material with the desired color and apply it via Object Styles or directly to the family .
3. Confirm Changes: Click Apply or OK to update the project. The new color will now display in all views that use the default object style.

View-Specific Color Changes

1. Visibility/Graphics Overrides: Press VG or go to View → Visibility/Graphics. Under the Cable Tray category, you can override projection lines or surface patterns for a specific view .
2. Filters: Create a view filter based on parameters like Service Type or Comments. Assign different colors to cable trays according to the filter. This allows multiple cable trays to display distinct colors in the same view .
3. Surface Pattern: In the filter settings, set the Surface Pattern to Solid Fill and choose the desired color. This ensures the color is visible in 3D views and renderings.

Export Considerations

• Navisworks: Filters alone do not carry over. Ensure each cable tray has a material assigned, as Navisworks recognizes materials, not view filters .
• IFC Export: Use the IfcSingleMaterialOverride parameter with materials generated based on Service Type. This ensures consistent color in IFC files and avoids grey default exports .

Best Practices

• Use Service Type parameters to automate color assignment for different cable tray types.
• Avoid manual overrides for each element; instead, set up filters and materials in your template for consistency.
• Duplicate cable tray types if necessary to assign unique materials for each service type, ensuring accurate visualization and export results . By combining Object Styles, materials, and view filters, you can achieve both project-wide uniform colors and distinct colors for different cable tray types, visible in 3D views, renderings, and exported files.