How to set background color of cell to red

Hi Guys,

until now I could change the font color of the text inside a cell to red by using the following code:

CONCATENATE '<font color="red">' ls_ci_ti_compare-ci_value '</font>' INTO html_string.

CREATE OBJECT html_bee.
html_bee->add( html = html_string ).
p_replacement_bee = html_bee.

Can anybody tell me how is the code to set the background colour to red? I need really a code example how to

fill the variable html_string?

Thank you,

Oliver