Aiding the eye is important
As much as the visual needs to be expressive of the data story, it is also important to use the right combination of color schemes, fonts and overall design to make the visual eye friendly. It helps to think of your visual being read by complete novices who know nothing of data visualization, or data science as a whole. If the visual has too much junk, or is too flashy or crowded, the untrained mind might get bored trying to filter out the relevant information. Simplicity, conciseness and expressivity are the key to a successful visual.
By: Somrik Banerjee