How do I change colors in a multilevel recyclerview

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Android

I have a multilevel recyclerview, and I have already set different colors for every item on the first level of the recyclerview.
I need for every subitem on every list, to have the same color as the parent list, but different text.
How can I accomplish this?
Thanks.

What I have tried:

<pre>
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.LinearLayout.LayoutParams;

public class MainActivity extends Activity
{
    ExpandableListView explvlist;

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        explvlist = (ExpandableListView)findViewById(R.id.ParentLevel);
        explvlist.setAdapter(new ParentLevel());

    }

    public class ParentLevel extends BaseExpandableListAdapter
    {

        @Override
        public Object getChild(int arg0, int arg1)
        {
            return arg1;
        }

        @Override
        public long getChildId(int groupPosition, int childPosition)
        {
            return childPosition;
        }

        @Override
        public View getChildView(int groupPosition, int childPosition,
                                 boolean isLastChild, View convertView, ViewGroup parent)
        {
            CustExpListview SecondLevelexplv = new CustExpListview(MainActivity.this);
            SecondLevelexplv.setAdapter(new SecondLevelAdapter());
            SecondLevelexplv.setGroupIndicator(null);
            return SecondLevelexplv;
        }

        @Override
        public int getChildrenCount(int groupPosition)
        {
            return 5;
        }

        @Override
        public Object getGroup(int groupPosition)
        {
            return groupPosition;
        }

        @Override
        public int getGroupCount()
        {
            return 7;
        }

        @Override
        public long getGroupId(int groupPosition)
        {
            return groupPosition;
        }

        @Override
        public View getGroupView(int groupPosition, boolean isExpanded,
                                 View convertView, ViewGroup parent)
        {
            TextView tv = new TextView(MainActivity.this);
            switch(groupPosition % 7) {
                case 0:
                    tv.setText(getResources().getStringArray(R.array.colores)[groupPosition%7]);
                    tv.setBackgroundColor(Color.WHITE);
                    tv.setPadding(10, 7, 7, 7);
                    break;
                case 1:
                    tv.setText(getResources().getStringArray(R.array.colores)[groupPosition%7]);
                    tv.setBackgroundColor(getResources().getColor(R.color.c2));
                    tv.setPadding(10, 7, 7, 7);
                    break;
                case 2:
                    tv.setText(getResources().getStringArray(R.array.colores)[groupPosition%7]);
                    tv.setBackgroundColor(getResources().getColor(R.color.c3));
                    tv.setPadding(10, 7, 7, 7);
                    break;
                case 3:
                    tv.setText(getResources().getStringArray(R.array.colores)[groupPosition%7]);
                    tv.setBackgroundColor(getResources().getColor(R.color.c4));
                    tv.setPadding(10, 7, 7, 7);
                    break;
                case 4:
                    tv.setText(getResources().getStringArray(R.array.colores)[groupPosition%7]);
                    tv.setBackgroundColor(getResources().getColor(R.color.c5));
                    tv.setPadding(10, 7, 7, 7);
                    break;
                case 5:
                    tv.setText(getResources().getStringArray(R.array.colores)[groupPosition%7]);
                    tv.setBackgroundColor(getResources().getColor(R.color.c6));
                    tv.setPadding(10, 7, 7, 7);
                    break;
                case 6:
                    tv.setText(getResources().getStringArray(R.array.colores)[groupPosition%7]);
                    tv.setBackgroundColor(getResources().getColor(R.color.c7));
                    tv.setPadding(10, 7, 7, 7);
                    break;
            }
            /*TextView tv = new TextView(MainActivity.this);
            tv.setText("->FirstLevel");
            tv.setBackgroundColor(Color.WHITE);
            tv.setPadding(10, 7, 7, 7);*/
            tv.setTextSize(20);
            return tv;
        }

        @Override
        public boolean hasStableIds()
        {
            return true;
        }

        @Override
        public boolean isChildSelectable(int groupPosition, int childPosition)
        {
            return true;
        }
    }

    public class CustExpListview extends ExpandableListView
    {

        int intGroupPosition, intChildPosition, intGroupid;

        public CustExpListview(Context context)
        {
            super(context);
        }

        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
        {
            widthMeasureSpec = MeasureSpec.makeMeasureSpec(960, MeasureSpec.AT_MOST);
            heightMeasureSpec = MeasureSpec.makeMeasureSpec(600, MeasureSpec.AT_MOST);
            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        }
    }

    public class SecondLevelAdapter extends BaseExpandableListAdapter
    {

        @Override
        public Object getChild(int groupPosition, int childPosition)
        {
            return childPosition;
        }

        @Override
        public long getChildId(int groupPosition, int childPosition)
        {
            return childPosition;
        }

        @Override
        public View getChildView(int groupPosition, int childPosition,
                                 boolean isLastChild, View convertView, ViewGroup parent)
        {
            TextView tv = new TextView(MainActivity.this);
            tv.setText("child");
            tv.setPadding(15, 5, 5, 5);
            tv.setBackgroundColor(Color.YELLOW);
            tv.setLayoutParams(new ListView.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
            return tv;
        }

        @Override
        public int getChildrenCount(int groupPosition)
        {
            return 1;
        }

        @Override
        public Object getGroup(int groupPosition)
        {
            return groupPosition;
        }

        @Override
        public int getGroupCount()
        {
            return 1;
        }

        @Override
        public long getGroupId(int groupPosition)
        {
            return groupPosition;
        }

        @Override
        public View getGroupView(int groupPosition, boolean isExpanded,
                                 View convertView, ViewGroup parent)
        {
            //Second Level
            TextView tv = new TextView(MainActivity.this);
            tv.setText("-->Second Level");
            tv.setPadding(12, 7, 7, 7);
            tv.setBackgroundColor(Color.RED);

            return tv;
        }

        @Override
        public boolean hasStableIds() {
            // TODO Auto-generated method stub
            return true;
        }

        @Override
        public boolean isChildSelectable(int groupPosition, int childPosition) {
            // TODO Auto-generated method stub
            return true;
        }

    }
}