Conditional formatting with dates

[John thomas]

Hi Help please
I have a continuous form that i use for tasks
i have a date opened box .I am trying to turn the box a differnt colour say amber if the opened date is more than one day old
and red if 2 days old
and brown after that
Just cant seem to get any sense out of it

 

[pbaldy]

An expression along the lines of

[FieldName] < Date()-2