CREATE TABLE table_name_45 (livery VARCHAR(255), wheel_arrangement VARCHAR(255), locomotive_type VARCHAR(255), year_built VARCHAR(255))
What is the livery of the steam locomotive built after 1950 with a wheel arrangement of 2-6-2?
    
SQL: SELECT livery FROM table_name_45 WHERE locomotive_type = "steam" AND year_built > 1950 AND wheel_arrangement = "2-6-2"