Change Team Site .ms-core-pageTitle color on all pages of the site

Hey!

I've been trying to change the color of the .ms-core-pageTitle class on a Team Site. There's no problem changing the color of the page title on start.aspx, but other pages in the same site gets the default page title color (sort of black, instead of the very different white I've been experimenting with).

This is what I've been using:

.ms-core-pageTitle{
font-size: 35px;
font-weight: bold;
color: white;
}

The font-size works on all pages, but the color only applies to the start.aspx. (The font-weight doesn't work either, but I put it in there as a test and don't really mind as I don't want the text to be bold when I'm finished.) I've tried a few different sites.

Can anyone tell me why this is, and how I can correct it?

Thanks, guys!