docs: Add alias and color examples to sample-lnd.conf

sample-lnd.conf

@@ -103,6 +103,14 @@
 ; to decrypt it. This value is ONLY to be used in testing environments.
 ; noencryptwallet=1
 
+; The alias your node will use, which can be up to 32 UTF-8 characters in
+; length.
+; alias=My Lightning ☇
+
+; The color of the node in hex format, used to customize node appearance in
+; intelligence services.
+; color=#3399FF
+
 
 [Bitcoin]