I think designers need to remember that their are no hard rules for color and emotion. There are generalizations, warm colors advance, cool colors recede, etc
People try to match the feelings to previously held expectations. These associations are based on prior experience and may be the result of age, gender, culture, or geography and they can get in the way when trying to isolate people’s responses to color groupings. Scientists’ understanding of how color can change and motivate our conscious or subconscious mind is still in its infancy. There’s little doubt that color can be stimulating, relaxing, engaging, and even annoying, but translating it into a reliable recipe to sell products or make viewers uniformly pay attention to a client’s message is a long way off.
–Design Elements: Color Fundamentals by Aaris Sherin
Color in these designs is just one of many elements. They all should work in harmony to drive a desired result. The context and surrounding environment combined with individual mental models can lead to many different results. Which to your point, is why testing, interviewing and observing actual users is so important.