Inventory stack number overlay

[Matia]

Has anyone figured out where the settings are for the font size in the inventory stack number?

For example, I have a stack of 20 resins in my inventory and the little box with the number 20 shows up over the resin icon.

I have managed to resize all of my bag and inventory slots down to 28x28, but the numbers are a bit big to me at that size compared to the size of the slot.

[Eloa]

Interesting, there is no trace of it in the xml as far as I can see. Not even in the Iconstyle. I'd say its uneditable.

[Kalazart]

I have problems with that too... but mine simply won't show up. All I have is a stack without numbers. Anyone got any ideas to help me?