Don't Hug Me I'm Scared Edit
The colour green was first disliked by the Notebook and in the least subtle way. She asks the main puppets to collect leaves and sticks and arrange them in to their favorite colour. The yellow guy arranges them as green. The notebook says probably the most famous line in the series, "Green is not a creative colour".
Don't Hug Me I'm Scared 2 Edit
The colour green is hated in a more subtle way. Tony says to the puppet that it is "Time to have a bath". The Bird Guy protests and says "What do you mean, we're already clean?". Tony then baths the puppets and says "Scrub, scrub, scrub til the water's brown." Following the rhyming pattern the words clean and brown should rhyme together but they don't, the only colour is green so Tony is purposely ignoring green, though it may be because it doesn't make sense for the water to turn green, and that dirt is brown.
Don't Hug Me I'm Scared 3 Edit
Shrignold and the rest of the love cult do not seem to have a dislike the colour green, although rainbows in the flying sequence lack green stripes.
Don't Hug Me I'm Scared 4 Edit
The Computer asks the puppets what their favorite colour is. The picture on the computer screen only shows the colours blue, yellow and red, although most electronic systems use RGB colour model.
Don't Hug Me I'm Scared 6 Edit
During dream sequence, portrait of Duck Guy is obscured by camera. Also, the green button on that same camera is mostly hidden by the next one along.
Green is the colour of the version of the Yellow Guy from the ending, meaning that the Yellow Guy is now allowed to like the colour green.
Theories on the hatred of green Edit
It is unknown why most of the teacher puppets dislike green. The most common theory is powerful people, such as the media and religion, can make most people dislike green if they want to. It was adverting that made blue a boys' colour and pink a girls' colour.