This should work..
<style name="DrawerArrowStyle" parent="Widget.AppCompat.DrawerArrowToggle">
<item name="spinBars">true</item>
<item name="color">@color/your_color</item>
</style>
and in your parent theme..
<style name="AppTheme" parent="AppBaseTheme">
<item name="drawerArrowStyle">@style/DrawerArrowStyle</item>
.
.
.
</style>