Macintosh PowerBook 180c (1993)
In June 1993, Apple released an identical color version of this model, the PowerBook 180c (pictured above). It had an 8.4 in (210 mm) diagonal active matrix color LCD capable of displaying 256 colors and was the first PowerBook to natively display 640x480 (all previous PowerBooks had 640x400 resolution). As a result of the thicker color display, the exterior case lid was redesigned, more closely resembling that used on the PowerBook Duo series. The same modification was used on the PowerBook 165c to accommodate its thicker color display as well.
via Wikipedia: http://en.wikipedia.org/wiki/PowerBook_180