Adjust size of drop-down box

Hi. Does anyone know whether there is any way to increase the font size of the drop-down box in Calc ? When using Data Validation and specifying a list of valid entries, they can be arranged to appear in a drop-down box, but the box and the font size in it is too small. Is there any way to make the font and drop-down box bigger ?

I really need to know the answer to those exact question as well.