Answer:
The strongest contrast of optical is produced by atmospheric conditions or unusual lighting .
Explanation:
https://www.quia.com/jg/2754815list.html
Billboard what a tremendous impact
This is different. But I will answer it.
First, you want to use light easy colors. Such as white background and colored text. But however, black background with colored text will work as well. This is only if you do not have to much text to display.
