I bet if the choices actually said "This is more green than blue" the results would be different.
Or people will naturally intuit that they should choose whichever answer they think is closer to true.
Personally I "tried" to answer truthfully at first and then went absolutely "ok f u, don't care no more" when it showed turquoise :D
Taking how you behave, and extrapolating that it to everyone, (and furthermore being unable to accept that other people might behave differently), is not a winning strategy for life.
Just to add my own anedcote to the database.
I'm talking about random day to day browsing when you stumble on something random on the internet.
It's clearly more turqoise than blue. Or green.
Turqoise on a computer monitor is always missing part of itself, so maybe I should've answered based on that, but I don't think the computer monitor was the point.