Frozen Ipod Touch - won't reboot it just goes to a different colour screen every time I try to reboot it, any suggestions?

I have a brand new just charged ipod touch 4th generation 32 GB. I have charged it and had it plugged into itunes this afternoon. It has frozen so I've rebooted it and nothing happens except it came to a blue screen. When I reboot it again it goes to a red screen or a purple or blue screen. No response. I've tried different charging cables and different usb cables to my computer with no response. Please help!