Change ic type and color style

[giangchipsieucuoi]

I'm trying to write a code to adjust led color and ic type but it's not working.
Can you guide me?

switch (color_style)
  {
    case 1: switch (type_ic)
      {
        case 1: NeoPixelBrightnessBus<NeoRgbFeature, NeoEsp8266Uart1800KbpsMethod> strip(PixelCount, PixelPin);
          break;
        case 2: break;
        case 3: break;
        case 4: break;
        case 5: break;
        case 6: break;
        case 7: break;
        case 8: break;
      }
    case 2: switch (type_ic)
      {
        case 1: NeoPixelBrightnessBus<NeoRbgFeature, NeoEsp8266Uart0Tm1814Method> strip(PixelCount, PixelPin);
          break;
        case 2: break;
        case 3: break;
        case 4: break;
        case 5: break;
        case 6: break;
        case 7: break;
        case 8: break;
      }
  }