I wouldn't say many brands do this, but I know some do, where they will dye certain cigar lines and call it a "Maduro". It's a selling point. They want to have a cigar targeted to smokers who like smoking Maduro cigars. However, it's a false product.

The actual term "Maduro" when it comes to cigars is the process in which the wrapper is grown and processed. Just because a wrapper is "dark" doesn't mean it's a Maduro. A true Maduro wrapper has gone through the process. Sadly, certain company just dye the cigar and call it a Maduro. I'm not claiming that Perdomo does this, but I know certain brands who do.