Can only change outline if shape has been created with one

[ventrue3000]

I've noticed that I can only change the colour or presence of the outline of a rectangle if it has been created with an outline right from the start. May apply to other shapes as well.

# This works

rect_with_outline = Rect(x=0, y=0, width=10, height=10, outline=0xFFFFFF) # White outline
rect_with_outline.outline = 0xFF0000                # Turns outline red

# These don't, but I would expect them to

rect_with_none = Rect(x=0, y=0, width=10, height=10, outline=None)     # Nothing to see here
rect_with_none.outline = 0xFF0000                   # Does nothing (Expectation: Turn outline red)

rect_with_nothing = Rect(x=0, y=0, width=10, height=10) # Nothing to see here
rect_with_nothing.outline = 0xFF0000                # Does nothing (Expectation: Turn outline red)

# This works around it 
# (baldengineer on Discord told me this, thanks!)

rect_with_workaround = Rect(x=0, y=0, width=10, height=10, outline=0xFFFFFF) # White outline
rect_with_workaround.outline = None                  # Removes outline
rect_with_workaround.outline = 0xFF0000              # Turns outline red