I bought some touchup paint from this guy on Ebay ->
http://stores.ebay.co.uk/BIKECOLOURS He is in the UK and has the paint codes for all the Ducati range including 888's. My bike has the original paint and it was an exact match. But if your bikes been painted again then you might have to try a couple. The kit I purchased came with some clear coat as well. I didn't end up using the clear on the red, but it's magic at hiding the stone chip stars in your carbon.