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