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!

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