RealPivot Guide
Pivot dynamic style

Dynamic style settings

Add dynamic className to cell with styleCallback property.

index.columns and index.rows are delivered in json format.

var styleCallback = function(pivot, index, value){
     if (index.rows["Country"] === "Domestic" && index.rows["Brand Name"] === "Kia" && index.valueField === "Vehicle Price") {
         var st = 'background';
         if (value < 10000) {
             st += '-low';
         } else if (value > 50000) {
             st += '-high';
         }
         return st;
     }
};

pivot.setDisplayOptions({styleCallback: styleCallback});
pivot.drawView();