This sample is to set the Style of the Axis Title.
ā—¸Layout
<horizontalAxisRenderers>
	<Axis2DRenderer axis="{hAxis}" showLine="true" axisTitleStyleName="title"/>
	axisTitleStyleName: Applies the style defined in <Style> in the name of "title".
</horizontalAxisRenderers>
<verticalAxisRenderers>
	<Axis2DRenderer axis="{vAxis}" axisTitleStyleName="title"/>
	axisTitleStyleName: Applies the style defined in <Style> in the name of "title".
</verticalAxisRenderers>

<Style>
	.title{color : 0x4691E1; fontSize : 12; fontWeight : bold; fontStyle : italic;}
</Style>