In 1988, three new colors were added to the X11R2 GUI, including two identical shades of grey, which, however, were written differently, as “gray” and “grey”. During a colour discussion at the JavaScript conference last year, developer Alex Sexton said that Hewlett-Packard programmers couldn’t remember the correct writing of “grey” through “a” (Gray), so a duplicating variant (Grey) was added to avoid code errors.