Yes, you can customize your Twitter login button.
Just add your UIButton to your storyboard screen. Select it and open the Identity Inspector, now in the Class text box, enter TWTRLogInButton, and then create a property.
You will create something like this: -
@property (nonatomic,strong) IBOutlet TWTRLogInButton *customTwitterButton;
After that, you can use it or implement it in your viewDidLoad method as follows: -
self.customTwitterButton = [TWTRLogInButton buttonWithLogInCompletion:^(TWTRSession *session, NSError *error) {
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