[Building Sakai] How to change color of portlet title.

[Tin Nguyen]

Dear all,
I am a newcomer with sakai. I'm trying to change skin of sakai, I want to
change the color of text of portlet Title and I change some code in
tool.css:

.portletTitle .title h2{
display: inline;
margin: 0 0 0 .2em;
padding: 0;
color: #d00;
font-weight: bold;
font-size: 3em;
}

I changed  the color from #555 to #d00, but it don't work. Do I wrong? Can
anyone help me?
Thanks you very much!
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