OK, I am a little puzzled as to the use of the new marble mugs xpres have got in. I have often given them a list of substrates that would be ideal for them to get in from pre-hemmed tea towels to tins but they say they hardly get new lines in. So all of sudden these mugs appear. Now I do have my cynical hat on although perhaps I should say well done for getting something unique but apart from black text, as in their example, what else is going to work. Only words compared to artwork I am thinking but surely only black colour is going to be suitable. So are these mugs dead in the water or could someone enlighten me to a profitable use?