Riddle Me This!

Hello!  I’ve gathered five of my favorite riddles for you here.  The correct answer to one of these is a Swag Code  worth 4 Swag Bucks when entered in ALL CAPS in the Swag Code box above before 4pm PDT/ 7pm EDT.  On your mark, get set, go!

Q. A blue house is made of blue bricks.  A yellow house is made of yellow bricks.  A red house is made of red bricks. An orange house is made of orange bricks.  What would a green house be made of?

A. Glass

Q. Pronounced as one letter but written with three, only two different letters are used to make me.  I’m double, I’m single, I’m black, blue and gray.  I’m read from both ends and the same either way.  What am I?

A. Eye

Q. The more of them you take, the more you leave behind.  What are they?

A. Footsteps

Q. I have holes in my top and bottom, my left and right, and in the middle.  But I still hold water.  What am I?

A. Sponge

Q. I can go down a chimney down, up a chimney down, but never down a chimney up.  What am I?

A. Umbrella