only add filling if there is a fill color (not None)
only add filling if there is a fill color (not None)

don't override None values!

inclement/kivy,akshayaurora/kivy,inclement/kivy,rnixx/kivy,LogicalDash/kivy,KeyWeeUsr/kivy,LogicalDash/kivy,bionoid/kivy,bionoid/kivy,Cheaterman/kivy,jegger/kivy,Cheaterman/kivy,KeyWeeUsr/kivy,jegger/kivy,kivy/kivy,akshayaurora/kivy,matham/kivy,KeyWeeUsr/kivy,bionoid/kivy,kivy/kivy,matham/kivy,jegger/kivy,Cheaterman/kivy,matham/kivy,matham/kivy,inclement/kivy,akshayaurora/kivy,kivy/kivy,LogicalDash/kivy,KeyWeeUsr/kivy,rnixx/kivy,rnixx/kivy,Cheaterman/kivy,jegger/kivy,bionoid/kivy,LogicalDash/kivy