title: how to override vuetify style for components globaly
body: <p>I am tring to set my buttons with vuetify but, I don't want each time to set the background color and the style of the button, or with any other vuetify component. 
  what is the best practice to set global style for the component like buttons chips avatar ect...
  i now i can create my own component for that but then there is no reason using vuetify.
  I have a nuxt project but the same apply to vue</p>