Some of the results from the first round of user testing were surprising and did not always come back as we first thought, but that is the whole reason for carrying out the user test! We want to see what the user thinks and prefers, and we want to design based on not what we think is best but what the user data is telling us. Although some of the first results came out mixed, in the second round of testing there was a clear winner in the yellow gold button. This did in fact prove my assumptions right(!) that the yellow CTA set against the green branding would stand out the most. Notable comments that many users added included: it draws more attention / looks easier to read / stands out more on a white background. 

This was a very fun and insightful user test to run, I enjoy hearing genuine and real feedback from users to assist in the designing of product.