gnumeric 1.8.2
running on Kubuntu 8.04
KDE 3.5.10

The color attribute of a cell is not exported properly when saving to a LaTeX table. Simple test, a spreadsheet with three cells:
        A           B         C
1     black      orange     blue

The color of text in each cell matches the color name. Save the file as a LaTeX table. Each cell prints out black. Here's a fragment of the table showing the problem:

         \gnumericPB{\centering}\gnumbox{black}
        &\gnumericPB{\centering}\gnumbox{{\color[rgb]{0.00,0.00,0.00} orange}}
        &\gnumericPB{\centering}\gnumbox{{\color[rgb]{0.00,0.00,0.00} blue}}

Clearly the color change is detected, because the two cells with changed color have \color[rgb]{...}, but the numeric values are incorrect, hence the incorrect output.