Three lovely photos!
I have been using Matrix metering exclusively, primarily because very often I "focus and re-compose", and thus I feel the light-meter would be "pointing at the wrong place" if I used one of the more concentrated modes.
But, a while ago I adjusted the "zero point", as described by Bjorn, but to a much larger extent: 2/3rd stops. The reasons are that over-exposure cannot really be rescued, but with the D750 shadows can be lifted with relative impunity.
I have found that, as a result, my colours seem much richer, my photos less flat...