Changing Redstone color.

So I've been trying to find a way to make the color of a Redstone particle change (Sorta like a rainbow) but it found no luck in attempting to do this. This the current code I'm using.

Code (open) Code (close)

Code:

public void lava(Player p) {
        f.remove(p);
        fw.remove(p);
        wa.remove(p);
        la.add(p);
        new BukkitRunnable() {
            double phi = 0;

            @Override
            public void run() {
                if (la.contains(p)) {
                    //if (phi > PI * 2) {
                    //this.cancel();
                    //return;//}

                    phi += PI * 2 / 20;
                    World world = p.getWorld();
                    Location center = p.getLocation().add(0, 2, 0);


                    double x = Math.sin(phi) * 0.6;
                    double z = Math.cos(phi) * 0.6;
                    Location particleLoc = center.add(x, 0, z);



                    R = Integer.parseInt(String.valueOf(R/ 255));
                    G = Integer.parseInt(String.valueOf(G/ 255));
                    B = Integer.parseInt(String.valueOf(B/ 255));

                    PacketPlayOutWorldParticles _packet =
                            new PacketPlayOutWorldParticles(EnumParticle.REDSTONE,
                                    true,
                                    (float) particleLoc.getX(),
                                    (float) particleLoc.getY(),
                                    (float) particleLoc.getZ(),
                                    R ,
                                    G ,
                                    B ,
                                    1, 0);
                    for(Player _online : Bukkit.getOnlinePlayers()) {
                        ((CraftPlayer)_online).getHandle().playerConnection.sendPacket(_packet);
                    }
                    if (R > 255){
                        R = (int) 0.0000000000001;
                    }else{
                        R = R+1;
                    }
                    if (G > 255){
                        G = (int) 0.0000000000001;

                    }else{
                        G = G+1;
                    }
                    if (B > 255){
                        B = (int) 0.0000000000001;
                    }else{
                        B = B+1;
                    }
                } else {
                    this.cancel();
                }
            }

        }.runTaskTimer(this, 0, 2);
    }

    public static int R, G, B = 0;

What could I fix to make the Rainbow particle or what should I try instead of this?
Thanks in advanced.

 

It would be interesting would you code produces so far.
Anyway, I think I can already see the which parts of the code might not function right.

Code:

R = Integer.parseInt(String.valueOf(R/ 255));

This is the weirdest thing I've ever seen.
If you devide an int by another int the result will also be an int

Code:

R /= 255;

Second thing is, that at this point variable R can only be 0 or 1. Deviding it by will always return 0 again. Over and over.

Code:

R = (int) 0.0000000000001

After this line variable R would also just be 0 btw.