I am not certain what you are asking.
If you want to see it in ‘true’ 3D, use the view function, and to change the axes LineWidth or GridLineStyle (or both), those (and other) options are also available:
%some plotting
axis([0 1 0 1 0 1])
hold all
quiver3(0,0,-max(zlim),0,0,2*max(zlim),'b','LineWidth',1)
quiver3(0,-max(ylim),0,0,2*max(ylim),0,'b','LineWidth',1)
quiver3(-max(xlim),0,0,2*max(xlim),0,0,'b','LineWidth',1)
text(0,0,max(zlim),'Z','Color','b')
text(0,max(ylim),0,'Y','Color','b')
text(max(xlim),0,0,'X','Color','b')
axis equal
view(30,30)
set(gca, 'LineWidth',2, 'XGrid','on', 'GridLineStyle','--')
.
