RGB rotations

#include "FastLED.h"
#include <SPI.h>
#define NumPixels 150       // number of LEDs in strip - count starts at 0, not 1
#define DataRate_Mhz 12
#define DataPin 11
#define ClockPin 13
 
CRGB leds[NumPixels];

int r = 0;
int g = 0;
int b = 0;
int rUp, rDown, gUp, gDown, bUp, bDown;
int Count =0;


void setup()
{
 FastLED.addLeds<APA102,DataPin,ClockPin,BGR,DATA_RATE_MHZ(DataRate_Mhz)>(leds,NumPixels);
 Serial.begin(115200);                             // set the speed at which serial monitor will write at
 fill_solid(leds, NumPixels, CRGB(0,0,0));         // fill all black
 FastLED.show();                                   // show 
 delay(2000);                                      // saftey first
}

void loop() 
{

switch(Count)
{
case 0:
if(r==0)
{
 for(rUp=0; rUp<=254; ++rUp)                //r adds one at the end so do 254
 {
 ++r;                                      // increase brightness
 fill_solid(leds, NumPixels, CRGB(r,g,b)); // light up whole strip
 FastLED.show();                           // show 
 delay(25);
 rDown=255;
 }
}

if(r>=255)
{
 for(rDown=255; rDown>=1; --rDown)         // r takes one at the end so do 1
 {
 --r;                                      // increase brightness
 fill_solid(leds, NumPixels, CRGB(r,g,b)); // light up whole strip
 FastLED.show();                           // show 
 delay(25);
 rUp = 0;
 }
}
++Count;
break;

case 1:
if(g==0)
{
 for(gUp=0; gUp<=254; ++gUp)               // g adds one at the end so do 254
 {
 ++g;                                      // increase brightness
 fill_solid(leds, NumPixels, CRGB(r,g,b)); // light up whole strip
 FastLED.show();                           // show 
 delay(25);
 gDown=255;
 }
}

if(g>=255)
{
 for(gDown=255; gDown>=1; --gDown)         // g takes one at the end so do 254
 {
 --g;                                      // increase brightness
 fill_solid(leds, NumPixels, CRGB(r,g,b)); // light up whole strip
 FastLED.show();                           // show 
 delay(25);
 gUp = 0;
 }
}
++Count;
break;

case 2:
if(b==0)
{
 for(bUp=0; bUp<=254; ++bUp)               // b adds one at the end so do 254
 {
 ++b;                                      // increase brightness
 fill_solid(leds, NumPixels, CRGB(r,g,b)); // light up whole strip
 FastLED.show();                           // show 
 delay(25);
 bDown=255;
 }
}

if(b>=255)
{
 for(bDown=255; bDown>=1; --bDown)         // b takes one at the end so do 254
 {
 --b;                                      // increase brightness
 fill_solid(leds, NumPixels, CRGB(r,g,b)); // light up whole strip
 FastLED.show();                           // show 
 delay(25);
 bUp = 0;
 }
}
Count=0;
break;
}

Serial.print(Count); Serial.println("something");Serial.print(" Count="); Serial.println(Count);
delay(1000);
}