- can I change the color of the line used for the edges of my geometry?
Use handlers
[p,e,t] = initmesh('lshapeg');
h = pdeplot(p,e,t);
set(h(1),'color','g') % inside edges
set(h(2),'color','b') % boundary edges
- can I change the color of the faces?
plot your geometry using patch
patch('faces',t(1:3,:)','vertices',p',...
'facecolor','r')