On what date was the attendance greater than 18,118 when Colorado was the visitor?
CREATE TABLE table_56660 (
    "Date" text,
    "Visitor" text,
    "Score" text,
    "Home" text,
    "Decision" text,
    "Attendance" real,
    "Record" text
)
SELECT "Date" FROM table_56660 WHERE "Attendance" > '18,118' AND "Visitor" = 'colorado'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: On what date was the attendance greater than 18,118 when Colorado was the visitor? ### Input: CREATE TABLE table_56660 (
    "Date" text,
    "Visitor" text,
    "Score" text,
    "Home" text,
    "Decision" text,
    "Attendance" real,
    "Record" text
) ### Response: SELECT "Date" FROM table_56660 WHERE "Attendance" > '18,118' AND "Visitor" = 'colorado'