[jacobolus]

The links between colors and emotions are (at least somewhat) culturally specific and subjective. There have been some efforts to classify specific cultures’ associations and preferences which you can find in a search of the academic literature. It’s hard to find much rigorous material on the subject though.

You can of course also find many artists and art teachers with grandiose personal theories about the subject.

My recommendation is to just put the time and work into learning your own personal preferences, by doing your own color exercises. For some design-y ideas about exercises to try see e.g. Josef Albers’s book. For photography, the best training IMO is to just make and look at lots of pictures.