Looks like a difference in the sheen of the clear coat that they used in the different pics. Equate it to house paint. Flat is not as shiny as satin which is not as shiny as high gloss The blue patina truck looks like a low gloss finish while the white truck looks like some type of high gloss. There are also matte finishes.

"it's only old if you can't find a use for it; otherwise it's cool and i'll use it."