CREATE TABLE table_15844 ("State/territory" CLOB, "Text/background colour" CLOB, "Format" CLOB, "Current slogan" CLOB, "Current series" CLOB, "Notes" CLOB)

Name the background colour for the Australian Capital Territory
SELECT "Text/background colour" FROM table_15844 WHERE "State/territory" = 'Australian Capital Territory'
SELECT "Text/background colour" FROM "table_15844" WHERE "State/territory" = 'Australian Capital Territory'