Answer : Mirrors that are described as PTM (paint-to-match) are made specially to be painted. Mirrors that are described as Black are made to be installed with out painting but can still be painted. 80% of K-source mirrors are ABS plastic and can be painted or chrome plated. 20% of K-source mirrors are PP plastic (polyethylene) and cannot be painted or chrome plated.
Answer : Chrome is a coating on top of metal or plastic that is highly reflective (like a mirror) and has no grain. Stainless steel is a steel alloy that does not stain, corrode, or rust as easily as ordinary steel (it stains less), but it is not stain-proof.
Answer : Universal mirrors are made to fit the majority of cars and trucks, but not all. In very few cases the mirror cannot be adjusted to the required position because of the angle of the mounting area.