Using Kindle Fire to Read from 3rd Party Apps

[baseliner35]

Having used the Kindle Black & White to read Kindle books, I was very impressed with the experience in bright sunny conditions but I was looking to buy a Kindle Fire and Read magazines from an App called Magzter. Is the Kindle able to use the same black and white type interface when reading from a third part app like Magzter (or a Newspaper App), for example ?