My grid looks good while in my development machine, however on the hosting server, the grid header background looks different, I used one of the available grid template, the one with the background in blue and white font.
The blue background only covers the area where there are letters leaving the rest of the header space in white.
For example if my cell header is 2 inches long and the actual text that goes there is "ID", you will see blue background header on ID while the rest of the 2 inches show white background.