I can't change the color of the label, the characters inside the input, the borders. What procedure to style TextInput?
You can use the Theme property in the TextInput
Here I have changed the color to red
theme={{
colors: {
primary: "red",
},
}}
Output

Full TextInput Code for Reference
<TextInput
mode="outlined"
label="Name*"
value={this.state.name}
theme={{
colors: {
primary: "red",
},
}}
onChangeText={(name) => {
this.setState({
name,
});
}}
style={styles.customStyles}
/>
Most helpful comment
You can use the Theme property in the TextInput
Here I have changed the color to red
Output

Full TextInput Code for Reference