its common practice. thru the years we do charterboat custom colors. we have the agreement not to go public for 2 seasons, to protect their secrets.on another subject we have been contacted by company lawyers on packaging card infringments.
each country has trademarks, and copryrights.folks ask why we dont get peed off on copied patterns we do. well hell somewhere they were done years back.
its impossible for smaller companies to protect images and styles. you,ll go broke defending.