Think about background colors for text. Do they interfere with thinking? Do they really enhance a worksheet or detract from it? Think about borders. Do they feel too confining or do they help to group some idea or related group of data? Think about the position of text headings in a column. Do they look better centered within the cell or better left-aligned? How would their position affect the contents of the column they head? For example, would a centered heading look good at the top of a column of right-aligned numbers? Would a left-aligned heading look good over a right-aligned column of numbers?