int redpin=9; //Pin 9
int greenpin=10; //Pin 10
int bluepin=11; //Pin 11
int var=0;
int var1=0;


void setup()
{
}

void loop()
{
for(var=250;var<255;var++)
{
analogWrite(redpin,var); //RED
analogWrite(greenpin,0);
delay(500);
analogWrite(redpin,0); //GREEN
analogWrite(greenpin,var);
delay(500);
analogWrite(greenpin,0); //BLUE
analogWrite(bluepin,var);
delay(500);
analogWrite(bluepin,0);
delay(500);
}

for(var1=250;var1<255;var1++)
{
analogWrite(redpin,var1); //YELLOW
analogWrite(greenpin,var1);
delay(500);
analogWrite(redpin,0);
delay(500);
analogWrite(greenpin,var1); //CYAN
analogWrite(bluepin,var1);
delay(500);
analogWrite(greenpin,0);
delay(500);
analogWrite(bluepin,var1); //MAGENTA
analogWrite(redpin,var1);
delay(500);
analogWrite(bluepin,0);
delay(500);
analogWrite(bluepin,var1);
analogWrite(redpin,var1);
analogWrite(greenpin,var1);
}

}