RGB.pde

int time = 1000;
int[] fromRGB = { 100, 0, 255 };
int[] toRGB = { 50, 0, 0 };

void setup() {
        makeTransition(fromRGB, toRGB, 1000);
}
 
boolean singleStep(int[] fromRGB,int[] toRGB) {
        boolean keepGoing = true;
        for(int i = 0; i < 3; ++i){
                keepGoing |= (fromRGB[i] != toRGB[i]);
                fromRGB[i] += ((fromRGB[i] > toRGB[i]) ? -1 : 1);
                 println(fromRGB[i]);
        }
        return keepGoing;
       
}
 
void makeTransition(int[] fromRGB,int[] toRGB,int time){
        while(singleStep(fromRGB, toRGB)){
                delay(time);
                
        }
}