It is year dependent on painted (Korean war shortages) or not, chrome was available in others.
https://www.flickr.com/photos/advance-design_parts_co/45097553812/in/album-72157698909942712/
Many of the ‘54 hubcaps I have seen were painted, but the vendors offer chrome.
https://www.flickr.com/photos/advance-design_parts_co/45113231582/in/album-72157698936735772/
There is a lot of information on your ‘54 here, I think hub caps are in here but there is a bunch to wade through?
https://www.gmheritagecenter.com/do...hevrolet-Trucks/1954-Chevrolet-Truck.pdf