Styling props for boxplot #9

Graph.propTypes = {

axisColor: PropTypes.string,
axisWidth: PropTypes.number,
axisOpacity: PropTypes.number,

gridColor: PropTypes.string,
gridWidth: propTypes.number,
gridOpacity: PropTypes.number,

ticksColor: PropTypes.string,
ticksWidth: propTypes.number,
ticksOpacity: propTypes.number,

labelColor: PropTypes.string,
labelFontSize: propTypes.number,
labelFontType: propTypes.number,

graphTitleColor: propTypes.string,
graphTitleFontSize: propTypes.number,
graphTitleFontType: propTypes.number,

}