There are a few .dll files that have some functions in it and you can also use the .Object layer to tap into native properties and methods for the table. If found a reference for some common methods at Microsoft here:

http://msdn.microsoft.com/en-us/library/system.windows.forms.datagrid_members(VS.71).aspx

Here's some code to try. It will return a numeric color number:

extern.declare micHwnd, ''GetDC'', ''user32.dll'', ''GetDC'',micHwnd
extern.declare micLong, ''GetPixel'', ''gdi32.dll'', ''GetPixel'',micHwnd,micLong,micLong

Set Boundry = SwfWindow('''').SwfTable('''').Object.GetCellBounds(0,1)

x = Boundry.x
y = Boundry.y

Hwnd = SwfWindow('''').SwfTable('''').GetROProperty(''hwnd'')
DC = Extern.GetDC(Hwnd)

colorNumber = Extern.GetPixel (DC,CInt(x+2/2),CInt(y+2/2))