These are the components that make up the content of art piece. Therefore, content can then be defined as the significance of the art components in a visual rendering. Clear examples of these definitions can be seen in the Catalonia painting collection of Rebecca Crowell which clearly depicts the strong formation of the painting and the content that comes to the fore once the brain has had time to absorb the lines, drawings, and scratches that make up the content of her colorful art work. The relationship between the content and form of the painting is what our eyes see as art. These two components combine to create a thought process in our minds pertaining to the overall effect of the visual qualities as seen in the painting. The two cannot be separated because the form of the painting is what we see while the content is the meaning of what we see as interpreted by our minds.
Although the message of a painting in terms of content and form are believed to be timeless, the interpretation of the viewer tends to change over the years. This can be attributed to the fact that people learn more about the background and influences of the artist and his state of mind at the time the painting was created, thus changing any interpretation or understanding that future generations may have about the art work. However the original interpretation shall always stand the test of time as the baseline interpretation of an artists work.
Your definition pertaining to content and form is certainly succinct. It is a clear definition that can easily be understood by any lay reader. However, I beg to differ with you in terms of your view that whenever form changes, content changes as well. There have been other painters such as the Kleophon Painter who painted the same content in various forms throughout time. He painted many Red Figure Attic vases while sticking to specific genres. These themes included, Greek mythology, domestic themes, and paintings of warriors. Although he