Hide and unhide rows will change the color fill of the specified cells

[Rocky2013]

Hi,
I have a lot of rows data all of them has main description, and I add a blue file color
and two lines to enhance the cells to look liked shadow. It does not look good with a lot
of blue color cells. I try hide and unhide rows will change the color fill of the specified cells.

The attached sample may help to clearify what I need help. I am not sure format conditioning
with work when cells call to hide and unhide.

Thanks