Custom placeholder color

[borut-t]

New Issue Checklist

• Updated PhoneNumberKit to the latest version
• Phone number formatted correctly on JavaScript version
• I searched for existing GitHub issues
• I am aware that this library is not responsible of adding/removing/changing phone number formats and any request should be done at libphonenumber repo

Steps to reproduce

Cannot set the placeholder color for custom placeholder text since withExamplePlaceholder is blocking it.

Expected result

The color to be applied for custom placholder.

Actual result

Color is not applied.

Environment

SPM