Decrease overlapping terrain - mod request

[BigDuke66]

Hi
Is it possible to decrease the overlapping of terrain into neighboring hexes?
With the current graphic you usually don't see empty hexes between other terrains, just try it yourself and make two rows of soft sand for example with a clear between them the graphic overlaps so much that the clear terrain in the row between the sand rows isn't visible anymore.

Would it be possible to modify those terrain graphics?