Here is an example to get you started:

.entry p {
    color: blue;
}

You can enter it in your Appearance → Themes → Customize → CSS panel.

You should update the color to a color code of your choice. Note that the example just affects paragraphs inside posts. If you wanted to change different types of font colors, either experiment a bit with the selectors or post back here with more specific info about which font colors you're trying to change.

Copy and paste the following code into your CSS Editor:

.entry-title a, .entry-title a:visited {
color: COLOURVALUE;
}

Replace COLOURVALUE with the black colour value given to the rest of the text on your site. (Your blog is set to private so was unable to get the value of this to put in the example code snippet myself.)

Hope that helps!

body,
.entry-content blockquote p {
	color: #000;
}

Note that if you find any other gray text you want to change, you can right-click on it, select the "Inspect Element" option, find where the "color" attribute is setup in the CSS on the right, copy the selector from that example, and add the selector to the comma-separated list above.

I can change the font style but cannot figure out how to make the body text black. Readers are saying the grey is hard on their eyes.

I do have the custom upgrade, but am not sure how to achieve this darkening of the post body text.

Thank you.

If you are not successful when searching there is a link for the specific Premium Theme support forum for your theme under Appearance -> Themes in your blog’s Dashboard, but do note that the premium theme must be active and you must be signed in as the user who purchased it in order to see it and post to it.

.post .entry-content {
	color: #000
}

Nice work!

#sidebar_right .widget ul li a:hover, #sidebar_left .widget ul li a:hover {
color: #33BB33;
}

The text color for post and page content is inherited from the body color setting:

body {
color: #33BB33;
}

If you want to change just the post/page content text color, you can use this instead, which is more specific:

.postarea p {
color: #33BB33;
}

Read-access to the premium themes forum is now open to all users so you can search to see if your question has been previously asked and answered there. The premium theme forums are at http://premium-themes.forums.wordpress.com/ with separate sections for each theme. http://premium-themes.forums.wordpress.com/forum/standard

If you are not successful when searching there is a link for the specific Premium Theme support forum for your theme under Appearance -> Themes in your blog’s Dashboard, but do note that the premium theme must be active and you must be signed in as the user who purchased it in order to see it and post to it.

body, button, input, select, textarea {
color: #000000;
}