Colour is a power which directly influences the soul.
There is no must in art because art is free.
Color transmits and translates emotion.
The more abstract is form, the more clear and direct its appeal.
… lend your ears to music, open your eyes to painting, and … stop thinking! Just ask yourself whether the work has enabled you to “walk about” into a hitherto unknown world. If the answer is yes, what more do you want?
Every work of art is the child of its time, often it is the mother of our emotions.