In 1962, Gibson collaborated with The Everly Brothers to produce the Everly Brothers Flat top. It had a thin J-185-style body with an adjustable bridge. Two unusual features on this model were the star-shaped inlays on the rosewood fingerboard, and the large double tortoise shell pickguards (replaced by black pickguards from 1968 onwards). These large pickguards covered most of the top of the body to such extent that the tone was limited. The standard finish on the guitar was black, but some were natural or sunburst finish.