If you can't already tell from my handle, I'm a huge fan of pink!

My personal preference goes like this: rose gold > platinum/white > yellow. I will probably never purchase yellow gold, unless I really, really love the piece and the piece only comes in that particular color for the style eg. Van cleef's white MOP alhambra pendant (which I'm still debating).
From the photos, I think both yellow and rose works on your wrist, but of course I prefer the rose.
As for mixing metals, I think rose and yellow should go well as they are both on the warm side, but when mixing with white/platinum I prefer either rose + white or yellow + white, not all 3. I don't usually mix necklaces, but i do mix bracelets. In fact, I love it when the design itself incorporates 2 tones. Maybe if you are worried you could wear your cartier piece with another piece that is 2 tone if you have? But it is ultimately your preference.