Write a custom control rule and use it.

For example - In below control, I am changing color of a field depending on the value of property.

<pega:save name="origValue" ref="$this-value"/>

<%
if(tools.getSaveValue("origValue").equals("B")){
tools.putSaveValue("Value","Black");
}
if(tools.getSaveValue("origValue").equals("O")){
tools.putSaveValue("Value","Orange");
}
if(tools.getSaveValue("origValue").equals("G")){
tools.putSaveValue("Value","Green");
}
if(tools.getSaveValue("origValue").equals("R")){
tools.putSaveValue("Value","Red");
}

%>

<div style="background-color:<%=tools.getSaveValue("Value")%>;width:<%=tools.getParamValue("width")%>;height:<%=tools.getParamValue("height")%>;" > &nbsp</div>

this can be an autogenerated section - for example in the case manager portal, the worklist urgency field will be displayed in red, orange or black - look at the section called pxUrgencyAssign in UI-Kit in 7.1.8 or higher. This is mainly achieve by dropping the control with the different formats and using a visible when for each cell.