getAlphabetConsistentPrimaryColor function
Implementation
Color getAlphabetConsistentPrimaryColor(String emailId) {
final alphabets = 'abcdefghijklmnopqrstuvwxyz'.split('');
final getPrimaryAlphabet =
emailId != strEmpty ? emailId.toLowerCase()[0] : 'a';
return Colors.primaries[alphabets.indexOf(getPrimaryAlphabet) ~/ 2];
}