My colleague Václav, created CCicon, free tool for easy association and recognize Revit® files by version.
Tool works in Explorer, file managers (Altap Salamander, Total Commander, ...) and supports file formats for Autodesk Revit® 2010–2025.

Click image for larger version. 

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  • Application changes native icon for Revit files (RVT, RFA, RFT, and RTE) with icons, marked with software version, in which they were saved (icon handler).
  • Application also opens file in the correct version of Revit software (association handler).


More info: https://www.cctools.cz/en/cciconen/