Bricks

Riddle: There is a pink house made of bricks, a blue house made of bricks, an orange house made of bricks. What color bricks is a greenhouse made of?

Answer: A greenhouse is made of glass or plastic, not bricks

Source: https://www.riddles.com/index.php/1309

There is a pink house made of bricks, a blue house made of bricks, an orange house made of bricks. What color bricks is a greenhouse made of? — Bricks by Anonymous v1.

Riddle: There is a pink house made of bricks, a blue house made of bricks, an orange house made of bricks. What color bricks is a greenhouse made of? Answer: A greenhouse is made of glass or plastic, not bricks — by Anonymous v2.