BgColor in different Cells

Hi!, I didn´ found how can change BgColor of cell column :
(colum 1, row 1) bgcolor red ,
(colum 1, row 2) bgcolor blue ,

------------------------
|header1 | header 2 |
------------------------
|bgcolor red | hello |
------------------------
|bgcolor blue | hello |
------------------------

Thank in advance,

Esteban,
Argentina.