Colors For PageBlockSection:

Colors For PageBlockSection:
This is a simple way of using styles in salesforce for Page Block Section Titles.

<apex:page standardController="Account">

<script>
function colorPageBlock(pageblock, color) {
if (pageblock != null) pageblock.firstChild.style.cssText = "background-color: " + color + ";";

}
</script>

<apex:form >

<apex:pageBlock title="My Content" mode="detail">
<apex:pageBlockSection id="redSection" title="My Content Section" columns="2">
<apex:inputField value="{!account.name}"/>
<apex:inputField value="{!account.site}"/>
<script>colorPageBlock(document.getElementById("{!$Component.redSection}"), "red");</script>
</apex:pageBlockSection>

<apex:pageBlockSection id="greenSection" title="My Content Section" columns="2">
<apex:inputField value="{!account.name}"/>
<apex:inputField value="{!account.site}"/>
<script>colorPageBlock(document.getElementById("{!$Component.greenSection}"), "green");</script>
</apex:pageBlockSection>

<apex:pageBlockSection id="orangeSection" title="My Content Section" columns="2">
<apex:inputField value="{!account.name}"/>
<apex:inputField value="{!account.site}"/>
<script>colorPageBlock(document.getElementById("{!$Component.orangeSection}"), "orange");</script>
</apex:pageBlockSection>
</apex:pageBlock>

</apex:form>

</apex:page>