When it comes to combining or installing wood floors in different colors, there's no right or wrong answer; it's all a matter of personal preference. The short answer is yes, you can mix and match hardwoods throughout the house. With the right approach, you can even place two different woods side by side. Ultimately, the decision of whether hardwood floors should fit from room to room is entirely up to you. You can choose to have different floors in each room if that works for you, but the harmony and flow of selecting a central floor material can also be beautiful.
I believe that hardwood floors on the same level should match. For example, we have hardwood floors upstairs and then Allure Ultra (vinyl) floors in the basement. They look similar, but they don't exactly match. If you want hardwood floors, all the colors should match. In most homes, the door is open and looking out into a hallway to see wood of different colors seems cheap.
We have had Bernards in my house and laminate flooring on the floor for the past 7 years, and it still looks like new. One of the most debated issues in home improvements and new construction is whether you should have different hardwood floors in house designs or choose a uniform floor material throughout the main body of the building. Ultimately, it's up to you to decide what works best for your home.