Recently, the Fender Custom Shop has devoted much time and resources to creating limited 'Art' guitars and basses. Generally shown off at the annual NAMM conference, these instruments are generally geared more towards guitar collectors than players and are often created to tie in with other industries as collector items, such as guitars created as a tribute to, and under the design influence of Ford's Mustang automobile. Many of the Art guitars created by the Custom Shop vastly expand upon Leo Fender's historical decorative innovations, who originally pioneered the use of custom colors on their instruments, which are essentially based on traditional designs but do not strive for accuracy to specific models.