When switching from resource packs back to the default, it shows incorrect colors and value for blocks, particularly ones in item frames. In this case I used the john smith Legacy resource pack. I have made screenshots before, in new texture, and after return. Error also occurs rarely when switching to this texture pack.

Upon seeing error, if you pop an item out of an item frame, it causes all items to show correctly.

Image 1: actual items in frame, correctly displayed
Image 2: after switching to john smith legacy pack
Image 3: after popping out an item and returning it ( items displayed correctly
Image 4: after returning to default