The table you created is empty, and is invisible on a Web page. It's simple until you get fancy with more table rows and columns, and tables within table cells, and other neat HTML tricks. Then your page becomes a sea of table tags that is almost impossible to comprehend unless you have been wise enough to put comment tags near each table tag, saying exactly what it does. Here's a 200-pixel wide table with an ugly lime colour. This cell is 150 pixels wide.
Tables take a bit of trial and error to get used to.
Determines the colour of a table. In Netscape 3.0 and above you can also use this to colour individual table cells.