SAN FRANCISCO–(BUSINESS WIRE)–Thumbtack, the technology company helping millions of people confidently care for and improve their homes, announced today a national partnership with The Sherwin-Williams Company designed to connect painting pros with new customers and grow their businesses. Thumbtack joins the Sherwin-Williams Digital Alliance Program as its newest member, adding to a curated offering of digital tools and exclusive benefits for their PRO+ customers. With Thumbtack, Sherwin-Will