many user use color of layer or geometry to indicate the machining type, so it is necessary to keep the color in the nesting result. NestLeader can do it now. the following is the method to keep the color.
1. Press the General button at the top-lefter corner
2. check on the "Keep Color in DXF file item" in general parameter page
3. click OK to confirm it.
Try to nest a part with color, you would found the color of geometry is kept, hope it can help someone.