如何更改android中项目宽度的StackedBarChart项目颜色

Question

我将橙色改为绿色，红色改为蓝色，我也要减少每个项目的宽度请建议我如何实现这个我无法找到哪种方法我们可以改变颜色和宽度？

XML

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    tools:context="app.num.horizontalstckedbar.MainActivity">

    <com.numetriclabz.numandroidcharts.StackedBarChart
        android:id="@+id/chart"
        android:layout_height="400dp"
        android:layout_width="wrap_content"/>
</RelativeLayout>

MainActivity.java

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        StackedBarChart stackBarChart = (StackedBarChart) findViewById(R.id.chart);
        List<ChartData> value = new ArrayList<>();

        Float[] value1 = {2f,3f,6f,5f };
        Float[] value2 = {3f,5f,7f,9f };

        value.add(new ChartData(value1, "Jone"));
        value.add(new ChartData(value2, "Joe"));

        List<String> h_lables = new ArrayList<>();
        h_lables.add("sun");
        h_lables.add("mon");
        h_lables.add("tue");
        h_lables.add("wed");

        stackBarChart.setHorizontal_label(h_lables);

        stackBarChart.setData(value);

        stackBarChart.setDescription("Stacked bar Chart");

    }

使用此代码，我可以绘制图形堆积条形图：如下所示