Blueshine

This quality can be applied only to metal armor,

which gains a blue-black color when so treated. The armor

never tarnishes and is immune to acid and rust attacks.

The wearer also gains a +5 circumstance bonus on Hide

checks. This bonus does not stack with the Hide bonus

granted by a cloak of elvenkind.

and Armor, spellcaster 12th level+, 5+ ranks in Alchemy;