Slaying Paint
This is a vile amalgamation, unlike normal poison paint, however, slaying paint is made to be mixed with an inhaled poison. When applied to a surface, slaying paint functions exactly like paint, blending into the background and becoming almost impossible to detect.
Ultimate Equipment Guide II
Author Greg Lynch, J. C. Alvarez
Publisher Mongoose Publishing
Publish date 2005
It is activated by playing a single note for five seconds in close proximity to the paint, but there the resemblance ends. When activated, slaying paint does not change colours or display a message, but rather, it releases the poison it holds into the air. A minute later, once the poison is expended, the slaying paint deactivates, leaving no sign of what happened.
Slaying Paint: 150gp per oz.