Shaun
Sorry I haven't replied earlier. Some PNs will show colour. As Paul has said NGC 3918 is very distinct. The larger ones (NGC 7293 the Helix for example) usually do not. An interesting one is IC418 (sadly not visible ATM but once Lepus comes back to our skies, check it out) as it displays distinct red/orange colours in my old 12" so worth trying in an 8"
Malcolm
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