int setRed(string str){
    
    int pix = str.toInt();
    
    uint32_t redC = strip.Color(pix,0,0);
    
    for(unit16_t i = 0; i<strip.numPixels();i++){
        strip.setPixelColor(i, redC);
        strip.show();
        delay(200);
    }
    
    return -1;
}

int setGreen(string str){
    
    int pix = str.toInt();
    
    uint32_t greenC = strip.Color(0,pix,0);
    
    for(unit16_t i = 0; i<strip.numPixels();i++){
        strip.setPixelColor(i, greenC);
        strip.show();
        delay(200);
    }
    
    return -1;
}


int setBlue(string str){
    
    int pix = str.toInt();
    
    uint32_t BlueC = strip.Color(0,0,pix);
    
    for(unit16_t i = 0; i<strip.numPixels();i++){
        strip.setPixelColor(i, BlueC);
        strip.show();
        delay(200);
    }
    
    return -1;
}