Without meaning to hijack or start another pointless "what is coding" argument, I'd like more information on this. I purposely used a black background w/ white text because I find that the lack of contrast when using soft/pastel is very hard on the eyes.
Low contrast is very hard to read whatever the colors. A light grey text on a pastel orange background should be a punishable offense. High contrast is necessary for reading and reading comprehension.
Reverse text (white on black) is simply unreadable. Comprehension rates drop as much as 80% when text is reversed. Decorative fonts are also functionally unreadable. Why do so many people get lost trying to find the wedding reception? Try and read the directions in a script font printed with silver ink on ivory paper!
HOWEVER (all caps also drops comprehension rates by over 50%). HOWEVER, it all depends on how much reading we're expecting.
All of these typographic crimes are OK when the amount of text is small. A headline in reverse type and using a decorative font is very appropriate. A title or very short description for a photo would be fine in grey type on a pastel background.
It's when you ask the reader to digest three or more sentences -- a paragraph -- and then heaven forbid another paragraph that you should make the text black on a light background, never use a decorative font and never use all caps. If you do those things with a paragraph or more of text you should not expect anyone to actually read it.
All of this has been carefully studied and tested and you can research it under the topic typography and reading comprehension.
Joe
P.S. In the image business however show trumps substance. If you don't look the part you're dead.