Working on a large file I had been doing modify Boolean, Unit and keep bodies. All parts in the assembly now appear semitransparent.

I'd like to understand what happened and more important to correct this problem.

I've spent many hours on this project and don't want to lose it. I've tried to close and open again to no avail.

If I export any of the parts and open them in a new window, they appear fine?

I seemed to have fixed this myself.

Once I toggled all the layers OFF then ON (more than 50 layers) it came good.

All solids appear as normal now.

Solid/Surface select Tools, then press Face Tools icon, then press Unset Material icon, now select all the solids/surfaces you want to clear of any transparencies or materials that have been applied to a solid.

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