Puzzled why I can't change page title font color for some pages

I’m using Enfold with the Splash Blue styling, but want to change the title_container background color to splash blue and the font color for page titles to white.

I’ve tried the suggested techniques on various threads, including https://kriesi.at/support/topic/change-color-of-font-in-title-container and https://kriesi.at/support/topic/change-colour-of-page-titles#post-65051.

Following the advice from the threads I’ve been successful in changing the title_container background color to blue for the pages on which I want it displayed. But I’ve been only partially successful in changing the font color to white. That is, for several of the pages the font is white, but for my main blog page the font color has not changed and remains black or very dark gray.

Here is the code I’m using, which I’ve inserted in my Enfold child theme.

/*changes to the title container */

.title_container {

background-color:#2d5c88;

}

.title_container h1 a {

color: #ffffff !important;

}

I get the same result if I insert the code in the custom.css.

Here is a link to my under construction site, which I’ve temporarily activated so you can see it:

http://uufreethinker.com/blog/

If you navigate to the About page the title container is blue and the page title is white. But if you navigate to the main Blog page the page title is still black.

Very puzzling. Thanks for any help you can give me.

John