I was interested to have them black withouth the need to remove the exhaust in order to perform the job, so I decided to take it to the paint shop and use a hot black paint. They will polish the tips and paint. If the paint falls apart with time, I´ll polish again the tips and they will look less shiny , the matte look will be more discret, we´ll see, I hope the hot paint to last some time.
I´ll post some before/after pics.

J.Seven