The Shabby Nest For similar paint colors try Benjamin Moore's Golden Lab (similar to the walls) and Benjamin Moore's Buttercup (similar to the trim color.)
Debra Campbell Design Venetian plaster with the color blended into the plaster, then glazed. The ceiling details was a stencil created by a local faux artist I use. She does incredible things.
I have used a similar wall color in projects. It is sunny and bright without be too bold. Layering w/brighter shades helps to give interest to the space.