CREATE TABLE table_8169 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Ground" TEXT, "Date" TEXT, "Crowd" FLOAT)

What date was the Colonial Stadium?
SELECT "Date" FROM table_8169 WHERE "Ground" = 'colonial stadium'
SELECT "Date" FROM "table_8169" WHERE "Ground" = 'colonial stadium'