Many companies add satisfaction surveys to their e-mails and thank you pages. In the case of a thumb survey in inches / inch down, does it make sense to use color to increase the number of responses?
I see two main disadvantages with the color red / green: in Asia, the colors are used on the contrary and the colors almost never correspond to the image of the company. So, the survey seems generally unprofessional.
The advantage I see is that it is faster to analyze for the user what is the "right" answer or the "wrong" because colors add redundancy to meaning.
What do you think is the best Red / Green or one color option?