The Rainbow Bar & Grill celebrated its 42nd anniversary featuring live performances by Great White, BulletBoys & Tracii Guns By Gerry Gittelson Metal Sludge Editor at Large   WEST HOLLYWOOD, Calif. – The Rainbow Bar & Grill celebrated its 42nd anniversary on Sunday, April 13 with a massive party in the parking lot, and of course Metal Sludge was there to scrape up all the grimy details. What a party it was with live performances[…]