You can set the following properties to affect chart titles:
<s:SciChartSurface FontWeight="Bold" FontSize="13" Foreground="Red" ChartTitle="CustomTitle text"/>
and the following properties to affect axis titles:
<s:NumericAxis TitleFontWeight="Bold" TitleFontSize="13" TickTextBrush="Red" AxisTitle="Custom Title text"/>
Take a look at our examples, we have one with 8 Y-Axes with different label colours per axis.
Update June 2014
From SciChart v3.0 we support customization of axis labels and title via appropriate styles. For more information please take a look on this article Styling Axis Labels, Axis Titles, Rotating Axis Labels
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