public void SetSky(Sky s) { this.sky = knownSkies[s]; }
public void SetMidground(Midground m) { this.midground = knownMidgrounds[m]; }
public void SetForeground(Foreground f) { this.foreground = knownForegrounds[f]; }
public void SetBackground(Background b) { this.background = knownBackgrounds[b]; }