didn't got the chance to take picture of oil which came out but it was dirty.
now coming to the oil always coming out dirty well its not possible each time when changed, as far as i know 1st time cd185 oil was changed after 1k km running it came out quite dirty as compare to oil which came out of gs150 which was far better in term of condition as gs150 hardly had few thousand km on meter. but since cd185 had several hundred thousand km engine running , it came out very dirty but on next oil changed which was done at 1.5k km running oil was in much condition look wise also in performance wise.
once the engine is clean from inside a good quality oil always keep it in good condition not allowing sludge to form inside.
hope this will answer yr queries.
and as i mentioned earlier we should not made assumption over how we feel about the oil but if in any doubt we should try the oil testing facilities available in big cities .
take care and kind regards.