I use the Converter function with following parameters
inputfilename, //Input file name
outputfilename, //Output file name
"TIFF", //Format, e.g.: TIFF, PDF, CALS
24, //Bits per pixel - used only for raster output formats
300); //Resolution (dots per inch) - used only for raster output formats
I believe 24 is for 24bit color image. But it still convert it as B&W image. I tried the trail version of scViewer to open the CGM file and save it as TIFF color. It convert fine with color. Only thing is shape in last two columns are off a little bit.
I attached the sample file I used(since it doesn't allow CGM to be uploaded, I zip it), please help.