How to use filter to color cell content

Numbers 3.5.2: I would like the content of a cell to change color, if the value of the number within the cell drops down below a certain value. For instance: as long as the values in the cell stay above 50 -> the number should be displayed black, if below 50 -> number should appear in red.

This was possible in Numbers 09 using a simple filter as shown here:

Did this filter disappear in actual Numbers? Is there any alternative?

Thanks

Ulrich