Class review

[latin_papi]

Thanks for the help provided.!

[sjalle]

You have a clean and consistent coding style and your Colour class is easy
on the eye & brain. I cannot see anything that "needs" to be shorter,
well, perhaps except for the equals method:

public boolean equals(Colours c) {
    return  (this.r == c.r) && (this.b == c.b) && (this.g == c.g);
}

My point is; why test a boolean value for true or false before returning it
to the caller when you might as well just return the boolean right away.

I have two suggestions for additions:

1: a hex setter & getter ?

2: a getRandomColor() method ?