Can't change color of Post/Page title

I have Atahualpa 3.4.6. I have tried to change the color of post/page titles by adding code to the "HEADLINE Box: Text" section under "Style POSTS & PAGES." I found this issue discussed in another post and copied the solution from that post:

padding: 0;
margin: 0;
font-size: 2.15em;
font-family: arial, verdana, sans-serif;
color: #333389;

Changes i make to the font and font size work fine, but any change made to color has no effect.

Here's what I typed:

padding: 0;
margin: 0;
font-size: 1.55em;
font-family: arial, verdana, sans-serif;
color: #FF0000;

Any help will be appreciated.