It's really very easy. Earth is, um, brown because that's the colour of earth, and the live is right and that must be the yellow and green because that's a lively colour. And that just leaves blue on the left, like the democrats... Hmm do you have a link to that video?(with just a quick Google to double check which colour wire is which).
Moderator Note
To all would be forum electricians - This is a joke (hopefully)...

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