Typical organic vehicles include, for example, resins such as polystyrenes, polyterpenes, polymethacrylates and ethyl cellulose and solvents such as butyl carbitolacetate, ethyl naphthalene, phenylcyclohexane, terpenes such as pine oil, alpha-and beta-terpinol ad the like, and mixtures of aliphatic and aromatic hydrocarbons.