Bookmarklet to Colorize Text Between 45 and 75 Characters (for line-length testing)

Recently at the CSS Dev Talk, I attended Clarissa Peterson's talk on responsive web typography. One part of it was about line length and readability. Of course, there are exceptions to every rule and your mileage may vary, but the traditional thinking is that body copy (long text, multiple paragraphs, takes more than a glance to read...) should be between 45 and 75 characters per line to be comfortable. Shorter is awkward, longer makes it easy to lose your place …

Bookmarklet to Colorize Text Between 45 and 75 Characters (for line-length testing) is a post from CSS-Tricks