from guizero import App,Text

app = App (title = "This is my first GUI")

firstmessage = Text(app,text = "GUIs are cool")
secondmessage = Text(app,text = "This is green")
message3 = Text(app,text = "This is the 3rd message with Red text and Calibri Font")

firstmessage.text_size = 40
secondmessage.bg="Green"
message3.text_color = "Red"
message3.font = "calibri"

app.display()