This is documentation for Mathematica 3, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)
 Documentation / Mathematica / Other Information / Menu Commands / Special NeXT Menus / Format  /
Background Color

▪ Background Color assigns the specified background color to the cell.
▪ "Gray Box" puts a cell frame around the cell with a light gray background. This command is setting a combination of the CellFrame and Background options.
▪ The commands in this submenu set the option Background on the selected Cell object(s) or on text within a cell.

▪ See Reference Guide: CellFrame.