I created an item renderer for a advanced datagrid and decided to put color on some of the cells. However the result comes with a vertical gap between the colored cell ( you can notice a big gap of white lines between the red cells on the screenshot)
Any idea how to remove this?
For the coloring of cell, I follow this tutorial link.

Can you set paddingBottom and paddingTop to 0? Docs make me think that these two properties control the gap.