.....rest of code.......
app = CreateObject("roAppManager")
theme.GridScreenLogoOffsetHD_X = "0"
theme.GridScreenLogoOffsetHD_Y = "0"
theme.GridScreenOverhangHeightHD = "0"
theme.GridScreenOverhangHeightSD = "0"
theme.GridScreenBackgroundColor = "#FFFFFF"
theme.BackgroundColor = "#FF0000"
This is something else that isn't mentioned in the documentation for roAppManager.
So your suggestion seemed to take care of the issue there as far as the top of the screen goes. However, I have now set the background color to white just for testing. It doesn't show up on the screenshot that I provided, but there is actually a light gray line that starts out in the top left hand corner, goes to the bottom of the last row (not screen), heads right until it gets to the left side of the description box, then heads up to right below the title line, then heads right to the right side of the screen where it goes back up to the top. On the left and right side the line seems to be about 20-30 pixels from the edge of the screen.
Is this like the edge of the canvas drawing for the grid? Is there a way to set the color of this line or remove it completely?