Spirituality: In many cultures and traditions, rainbows are seen as representations of divine promise. A rainbow painting may therefore be seen as a symbol of spiritual belief or as a source of comfort and inspiration.

Hope: Rainbows are frequently seen as beacons of hope, optimism, and good luck. A rainbow painting may therefore be seen as a reminder to be positive and to remember that better times are just around the corner.

https://808arts.com/blogs/hawaii-art/what-makes-a-rainbow-painting-special

Viewing art increases empathy, tolerance and critical thinking skills. A survey of over 10,000 students showed this to be true after the students toured an art museum. Interestingly enough, they found this to be especially true for students in rural schools or in high-poverty areas (Greene, 2014). It has also been observed through survey that mental health-focused art shows can increase empathy and lead to potential social change (Potash, 2010). https://www.shenarttherapy.com/single-post/2016/04/14/viewing-art-rewards-the-brain

A study from the University of Westminster found that participants' stress levels decreased after a lunchtime visit to an art gallery. Participants self-reported their stress levels before entering the gallery and then spent 35 minutes exploring the space in any way they wanted. Upon exiting, they expressed being less stressed. Furthermore, they also had lower concentrations of cortisol, commonly known as the stress hormone.https://www.mic.com/articles/106504/science-shows-that-art-is-having-fantastic-effects-on-our-brains-and-bodies

From a young age, children naturally communicate through art. You’ve probably caught them scribbling with crayons, markers, pens, and whatever else they can get their hands on. 

Creating art isn’t just a fun, colorful pastime. It has a variety of unique, positive effects on preschoolers, young children, and teens that other activities don’t provide. Here are eight reasons why you should encourage kids to participate in art on a regular basis. 

https://www.paintingtogogh.com/blogs/news/benefits-of-art-for-children