Just to add to what Pierre said about Smoothkit diffuse, and some selective color correction. You can start with the color correction and de-saturate overall, then pull a luminance matte of selective areas (that you want more vibrant) and pump up the saturation for these areas, then you can add the Smoothkit diffuse plug-in and do an overall slight diffuse and then add some grain on top of everything. That receipe should give you a similar look.