You can export colors in drawing mode.
If you set the
iges_out_dwg_color configuration option to
no (the default), the user-defined colors in the drawing are ignored when you export an IGES file, and sets every entity referencing these colors to use white color in the IGES file. If you set this option to
yes, the user-defined colors in the drawing are exported to the IGES file as color definition entities, and all entities using them are given a pointer to the corresponding color definition entity in the IGES file.