I also wanted to add that white text on a black background is a preferred style for low-vision or vision-impaired users. What isn't is when contrast is low, like using white text on brighter-then-dark backgrounds. The site designers can go only so far with gauging how their audience wants their site to look.
Most modern browsers (OmniWeb?) allow the user to set their own style sheet to correct things like that. If you want inverted text, very large text, specific colors for objects, etc. you can set it.
/* styling for my posts */
.intelligence {display: none;}
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