Using the Preview Post feature while using the Blue Solution theme results in the post being shown with the cyan text that's used in the text box, breadcrumbs, and several other places around the skin. Unfortunately, posts aren't shown in this color, they are shown in a light gray.
This is a very simple fix. Please do it.
While you're at it, you can spare your server precious bandwidth -- and visitors load times -- if you scrape that CSS into external sheets.