    private func incrementStep() {
        firstStepperValue += 1
        if firstStepperValue >= colors.count { firstStepperValue = 0 }
    }
    
    /// Decrement 1 step
    private func decrementStep() {
        firstStepperValue -= 1
        if firstStepperValue < 0 { firstStepperValue = colors.count - 1 }
    }