Off Colour is the 17th episode of Season 1. It originally aired on 20 February 2007 and was released on DVD volume 1.
Three cannot find a yellow circle Slidey Shape, so Four and Six help her. Just when Four finds it, the alarm goes off.
Things are disappearing in the living room. Agents explain that the things are yellow. Spooky Spoon is making this happen! She doesn't like bright colors like yellow because they make her look boring!
Then she removes red and blue things. Five wonders that is Spooky removes bright colors, then it would be a dull world. Then, Four sees that he's blue, so Spooky removes him.
Six starts up the Brain Gain Machine. Four returns but is transparent. Six needs one of Four's buddy blocks to help, and Four returns to normal. Four sorts the colors back to normal.
Next, he sorts out Spooky Spoon by turning her multicolor! Spooky goes crazy and flies away. Four returns to the sofa.
Later, Three sorts all the Slidey Shapes by color: red, yellow, and blue. Five points out that a blue star Slidey Shape is with the yellows, so Four moves it to the blues. Finally, Five asks the viewers to find a red thing, a yellow thing, and a blue thing.
- Numberjacks: 3, 4, 5, 6
- Agents: 88, 34, 25, 100
- Meanies: Spooky Spoon
- Although One, Two, and Nine are absent, one of their buddy blocks are shown. Zero, Seven, and Eight are also absent.
- Seven and Eight are the only absent Numberblocks whose Buddy Blocks are absent.