This short exercise/experiment can show you how you feel about certain ideas. It operates on the scientific assumption that colours can and do affect perception, and therefore human emotional and psychological state.
The human mind makes associations between ideas and emotions. Colour evokes emotions, and vice versa. According to the Department of Clinical and Social Sciences in Psychology at University of Rochester, colours have a direct effect on psychological functioning.
“The review clearly shows that color can carry important meaning and can have an important impact on people’s affect, cognition, and behavior. The literature remains at a nascent stage of development, however, and we note that considerable work on boundary conditions, moderators, and real-world generalizability is needed before strong conceptual statements and recommendations for application are warranted. We provide suggestions for future research and conclude by emphasizing the broad promise of research in this area.”
Color Psychology: Effects of Perceiving Color on Psychological Functioning in Humans
https://www.annualreviews.org/doi/abs/10.1146/annurev-psych-010213-115035
Here is an example of one of the pages:

fILL IN THE FORM TO DOWNLOAD
There are steps you must follow for this exercise to work correctly. No cheating. Remember that there is nothing the Devil, and I do mean me, hates more than humans who self-deceive. You will gain nothing from from pretending to manipulate the result of this experiment.
The instructions are as follows:
Before anything else, study the scene and realise how it makes you feel. Proceed to colour the square beside the word in each page.
Then colour the scene how you see it.
Pay attention to how each word and how each scene make you feel.
DO NOT READ THE LAST PAGE UNTIL FINISHED
Got it?
Good! Fill in the form above to get the pages.
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— The Devil Unbound
This sounds so interesting.
Will definitely try it. 🙂