For iOS and Windows, you can use the itemStyle prop directly with the Picker component. However, for Android, you’ll need to apply styles to each Picker. Item individually using the style prop:

<Picker 
selectedValue={value} 
onValueChange={v => setValue(v)}
>
<Picker.Item
label="hello"
value="key0"
style={{
backgroundColor: 'blue',
fontFamily: 'serif',
color: 'white'
}}
/>
<Picker.Item
label="world"
value="key1"
style={{
backgroundColor: 'blue',
fontFamily: 'serif',
color: 'white'
}}
  	/>
</Picker>

 

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