StyledButton.swift

class StyledButton: UIButton {

    ...

    func applyStyles() {
    
        // Apply regular style
        self.backgroundColor = .clear        
        self.titleLabel?.font = Theme.fontButtonText
        self.tintColor = Theme.colorShadowLight.cgColor

        // Apply different styles
        for style in self.styles {

            // Sizes
            
            if style == .large {
                self.contentEdgeInsets = UIEdgeInsets(top: 16, left: 16, bottom: 16, right: 16)
                self.titleLabel?.font = Theme.fontButtonTextLarge
                self.layer.cornerRadius = 8
            }

            if style == .wide {
                self.contentEdgeInsets.left = self.contentEdgeInsets.top * 2
                self.contentEdgeInsets.right = self.contentEdgeInsets.top * 2
            }

            if style == .tag {
                self.contentEdgeInsets = UIEdgeInsets(top: 4, left: 8, bottom: 4, right: 8)
                self.titleLabel?.font = Theme.fontTag
                self.setTitle(self.titleLabel?.text?.uppercased(), for: .normal)
                self.backgroundColor = Theme.colorBackgroundMuted
                self.layer.borderWidth = 0
            }

            // Background

            if style == .primary {
                self.backgroundColor = Theme.colorPrimary
                self.tintColor = Theme.colorPrimaryContrast
                self.layer.borderWidth = 0
            }

            if style == .secondary {
                self.backgroundColor = Theme.colorSecondary
                self.tintColor = Theme.colorSecondaryContrast
                self.layer.borderWidth = 0
            }

            // Tint

            if style == .tintPrimary {
                self.tintColor = Theme.colorPrimary
            }

            if style == .tintSecondary {
                self.tintColor = Theme.colorSecondary
            }

            ...

        }
    }
}