Colorado-based Denver Glass Machinery manufactures equipment for "the professional glass artist." Mesquite-based Paragon Industries likewise manufactures kilns and furnaces for the glass-making and clay-baking enthusiast; has, in fact, since 1948. The two companies could be considered rivals. If nothing else, after Paragon filed suit in Dallas federal court last week, they're certainly legal combatants.

And what, pray tell, brings them to the courtroom? A trademark on the color blue. Seriously. Not kidding. --Robert Wilonsky

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