What does "blue" mean to you --- that is, what does it mean musically? Does it denote a calm sky? Or a dramatic seascape? Or a conservative or subtle --- or perhaps emphatic --- image of some kind? Tomorrow night (Saturday the 22nd) at 7:30pm, the Tulsa Symphony Orchestra kicks off its new season with a "blue"-inspired concert in the Chapman Music Hall at the Tulsa PAC. (Each of the performances in the TSO's 2012-2013 season will carry its own colorful theme, as it were --- there's a "Green" concert in November, a "Yellow" one in December, etc.