Hi guys ! Help to understand how to change the color of the action in Snackbar ?
<Snackbar
visible={this.state.visible}
onDismiss={() => this.setState({ visible: false })}
action={{
label: "Undo",
onPress: () => this.setState({ isHidden: true })}}>
You are registered on {namefilm}
</Snackbar>
You can change it via theme prop:
theme={{ colors: { accent: 'red' }}}
Hmm, this doesn't feel quite right. Why doesn't the Context-provided theme apply to this specific component?
and, how to change the label color?
@potier97 in case you didn't find an answer - it's better to check TS definitions of Theme. I tried a few to find that I needed to change:

theme={{ colors: {surface: 'blue', accent: 'red'},}}
The example above describes the snackbar text color (and label color) as blue and the action color as red.
Most helpful comment
You can change it via theme prop: