nilaynilay, xbb open raise is possible to implement, i'll try to add it soon.
It is table width and height proportions in decimal format, can't you try increasing/lowering value?
Replace these lines in highlight function
Code:
x := x + xbord
y := y + xbord + cap
w := w - (2*xbord)
h := h - (2*xbord) - cap
with these
Code:
x := x + xbord +5
y := y + xbord + cap +5
w := w - (2*xbord) - 10
h := h - (2*xbord) - cap - 10