colour the value while displayin

hello friends,

i am working on a classical report.

now i have a condition that if the value is below a certain value then the colour should be RED or else the colour should be BLUE.

i am using the following code for colour

WRITE : (10) itab-act COLOR 5, '|' CENTERED.

but this is making the whole block coloured,i only want the value to be in RED or BLUE..

what to do for that ????