You have just mentioned one of my favorite looks. Lots of white,blue and yellow would carry out this theme. My dream dining room for example....round maple top table with white painted legs, oversize ladder-back,rush seat chairs under a pewter chandelier. The floor would be hardwood with and enormous rectangular blue and yellow rag rug underneath. The country french style china cabinet would be painted white on the outside and yellow inside and be filled with a collection of blue and white china. The walls would either be barn board in white below a chair rail with yellow and white stripes above or a toile print in blue. The windows would have lace curtains on the lower half only...it just seems a shame to keep the sun away from all that sunny color.