I don't know what muscle tone is, I have a feeling it's a made up term designed to sell bad exercise programs to middle aged women. In my experience, muscles get bigger or smaller, stronger or weaker, and that's about it.
That said, If strength is your main goal, a basic 5x5 program like stronglifts will work fine.
Diet is obviously a big. big, big factor in terms of any physique change. What exactly did you eat yesterday?