If you are having trouble playing the DVD in colour, it could be that your TV is not NTSC compatible (if an NTSC disc), therefore a black and white picture will result. Some TV's are not multi-standard therefore they cannot output an NTSC signal.
Technical problems on DVD should be reported in the first instance to customer services via email at mail@dukevideo.com, or telephone on +44 (0)330 088 5045.