Oh sorry I misunderstood your question. In order to make it into a cloth figure (I assume you mean conforming and not dynamic clothes) you will need to group it first. You must name the groups in the obj the same as they are on the character you want the clotes to fit, and observe Poser's soetimes weird casing (I just almost got bald over a pair of pants where I had named the group Hip and not hip) You must then set up a hierachy for the clothes, if you have Poser 5 or Pro Pack you can use the Setup Room, or there are programs made for it, such as KattMann's PWizard. You say the colours still doesn't work? You did UVMap it? And saved the obj? And that saved obj IS the one you're using? If all this is true I don't understand why the colours won't work.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.