On this page (as with so many of my pages) I played around a lot with the layer modes in Photoshop.
I started off by using papers from my Free 2Peas Kit for July (Cottage Bluff). After arranging all of my background papers, I added the pictures on top and then changed the layer modes so that the papers would show through the images. To leave just the blue in the bikini in the top right picture, I went to Hue/Saturation and lowered the saturation to 0 on all of the colors except Cyan and Blue.