Hi,
Cambria Shirebrook is gorgeous! I, too, love Dinner Party AF-300 with the counters.

Here are a few more color ideas (neutrals and bolds,) for you to try in the kitchen and adjoining rooms:

Benjamin Moore Rustique AF-275
http://www.myperfectcolor.com/en/color/103475_Benjamin-Moore-AF-275-Rustique

Benjamin Moore Georgian Brick HC-50
http://www.myperfectcolor.com/en/color/102916_Benjamin-Moore-HC-50-Georgian-Brick

Benjamin Moore Providence Olive HC-98
http://www.myperfectcolor.com/en/color/102947_Benjamin-Moore-HC-98-Providence-Olive

Benjamin Moore Abingdon Putty HC-99
http://www.myperfectcolor.com/en/color/71710_Benjamin-Moore-HC-99-Abingdon-Putty

The Cambria Brownhill has similar coloring to the Shirebrook, but definitely has more colors at play in there. Any of the colors above would work in there (especially if it's a powder room, which means it can be more dramatic.), but I'd also suggest:

Benjamin Moore Putnam Ivory HC-39
http://www.myperfectcolor.com/en/color/102910_Benjamin-Moore-HC-39-Putnam-Ivory

Benjamin Moore Mellowed Ivory 2149-50
http://www.myperfectcolor.com/en/color/102816_Benjamin-Moore-2149-50-Mellowed-Ivory

Benjamin Moore Pale Moon OC-108
http://www.myperfectcolor.com/en/color/75_Benjamin-Moore-289-Pale-Moon

For your master bath with the Cambria Praa-Sands, I'm thinking that you might want to pull the beautiful blue/gray out of the counters:

Benjamin Moore Gossamer Blue 2123-40
http://www.myperfectcolor.com/en/color/3946_Benjamin-Moore-2123-40-Gossamer-Blue

Benjamin Moore Ocean Air 2123-50
http://www.myperfectcolor.com/en/color/3947_Benjamin-Moore-2123-50-Ocean-Air

Benjamin Moore Horizon Gray 2141-50
http://www.myperfectcolor.com/en/color/4070_Benjamin-Moore-2141-50-Horizon-Gray

I hope these suggestions are helpful as you narrow down your choices. Ordering samples of the colors you're considering is a big help in finding the perfect color. Please let me know if you have more questions, or would like to go in a different direction with the colors.

Diana