Rehab/Remodel Questions for Standardizing Your Homes

[Chuck Bartowski]

I was just wondering if anyone has standard colors for walls and trim, tile choices for bathrooms, material types/styles/design colors for floors, etc. 

While it may be boring, I would like to make my rental properties similar so I am always buying the same paints, tiles, flooring, etc. I know that there are always variances (one of my house has solid wood floors, for example), but I would really like to standardize for simplicity. I would like to know what materials you like to use for your homes. Thank you.