如何在kivy中显示图片上标签的颜色？

from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.label import Label
from kivy.uix.image import Image

class ImageLabelApp(App):
    def build(self):
        layout = BoxLayout(orientation='vertical')
        
        # 创建一个标签
        label = Label(text='Hello World!', color=(1, 0, 0, 1), font_size=30)
        
        # 创建一个图片
        image = Image(source='path_to_image.png')
        
        # 将标签和图片添加到布局中
        layout.add_widget(label)
        layout.add_widget(image)
        
        return layout

if __name__ == '__main__':
    ImageLabelApp().run()