As you all know in my view - also the opinion to all of my Cartier SAs I've talked to regarding this issue (was thinking of buying, too) - a reg Pavé looks silly when combined with other Loves ... different thickness. However, if you still want to go ahead definitely use WG. Diamonds do not really shine on RG and YG.
Attached two pics to illustrate that - sry for the bad quality. It's dark already. I hope you see the difference.
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I was also not pleased with the different thickness between my original Love bracelets and the pavé so I kept only the pavé. I respectfully disagree with your assessment re diamonds on yellow gold and rose gold. Diamonds are of course closer in color to white gold but they absolutely show up on YG & RG and look fabulous.