I love love LOVE the neutrals in both kits and thought they'd work well mixed together. So I used papers from Sweet Escape and added a few of the kit's leafy elements as well. Then for pops of color I went with In Bloom's gorgeous flowers (seriously, nothing beats Kristin's flowers!).
Actually, the more I think about it, I totally believe doing the opposite would also work--using the warm palette of In Bloom's papers and then keeping most of the neutral-colored elements. I should try that myself! :)
Anyhow, I hope I was able to show how awesomely versatile Kristin's kits can be mixed together, even if they have differing color palettes and moods. Happy scrapping! :)