Hi Denis
Welcome to the Forum,
If you are talking about what i think you are then I suspect you have a USB disk device plugged into the back of your B2 with music files on it.
If this is the case then the "orange" heads would indicate that this music is on the USB device and the "black" heads would indicate that the music is on the B2's HDD.
Thus is you Unplug the USB the "orange" heads should disappear.
Hope this helps.
Fred