Here is a picture ...

now I have exported as usual my sword and stuff ... created the nif , placed all the extra data neeeded for the blood things as well ... all fine and perfect ... I copied the very same bslightning thing of the Steel sword and pasted into mine , I changed the textures with mine and I was sure that they had the same grade color tone and brightness , same for normals and _m texture ... now why I get http://img35.imageshack.us/img35/1168/59558372.jpgresult?

if you are getting an unexpected color tint, double check which cubemap you are using for your metallic effect. most material cubemaps are pre-colored

I am using the same of the steel weapons but on the steel weapons looks good on mine weird ...

depending on your environment mask texture, the results will vary even if you copy everything exactly the same in nifskope.