When it comes to art all you need say is “impressionist” for me to come running. Add an exhibition space in an elegant, 19th-century villa set in a wooded park with the French Alps as a distant backdrop and you’d best not get in my way as I come through. You might have guessed that I’m describing the exquisite exhibition underway at the Hermitage Foundation in Lausanne until 22 May of some 140 oil paintings, watercolors and drawings by master neo-impressionist painter Paul Signac (1863-1935). His works celebrate color, light, composition and technique in that unique and breathtaking way that make impressionist canvases (or neo-impressionists in this case) so cherished by art lovers. These works transform the everyday into something uplifting and otherworldly — “heavenly” may be a better way of saying it. In Signac, une vie au fil de l’eau nature and village scenes, sailing vessels, busy French ports and serene interpretations of Provencal life (before the tourist hordes descended) preoccupy Signac’s subject matter; his love of the sea and sailing, a personal passion, is evident throughout.   One room is devoted to introducing visitors to the colour theories of the neo-impressionists, featuring paintings by …