As linked and referred to earlier, Randy Brown of Open Artifact has already come up with a Purple Number Plugin for WP. You can see the implementation on his own blog. In simple terms, it allows hotlinking to a specific paragraph in a WordPress article.
Here is the link to the hack.
An avid fan of business, education, technology and finance. I lead a lean, highly focussed and capable team of Java Back End developers and Front End developers through a maze of complex software wizardry to fulfill the web maintenance needs of a large chemical manufacturer. As per Myers-Briggs Personality Types, I am an ESTJ. I pride in a project completed on time and according to plan. My hobbies include all kinds of technology, anything that I can taste and anything that goes fast or flies in the air. I like to read business books and comics in my spare time.
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That implementation is really annoying to me. The purple color distracts my reading. I think if you’re going to implement hotlinking in each paragraph you have to be really careful with your design and choice of colors.
I’ve updated PurpleNumbers to v1.0. You can find it and details here.
They are called Purple Numbers for a reason.
But, never fear… CSS is here. Just simply change the color inside the plugin.
Hope this helps.