Here are some painted 15mm crossbowmen.
The stand on the left is Black Hat and Touller, the next stand is Essex and the stand on the right is Mirliton.
This is a close up of the Black Hat and Touller figures. They mix well, including the crossbows which are different styles in the other makes. The outer two are Black Hat, the centre two are Touller
One of the distinctive features of Italian warfare was the wide use of pavesarii, shield bearers protecting the crossbowmen behind.
These are Mirliton figures. The Mirliton figures with pavise, CO11, are the same as the 'Assorted infantrymen' CO10. I decided to replace these with the ones attacking with lanze longhe - CO12.
The pavises were marked in the colours of their state. http://www.heraldica.org/topics/national/tuscany.htm has some information from Villani. Much of the information is in Italian - unfortunately for me only some of Villani is easily available in an English translation.
Before the Battle of Campaldino, the shortsighted Bishop of Arezzo is said to have asked "Whose walls are those?" receiving the reply that they were the enemies' shields. Dino Compagni's account is here
If you can get access to a copy of Sercambi's illustrations they are chock full of examples of painted pavises. They are from the later 14th century but are still useful. My local university library has a copy.
Incidentally, David Nicolle says that the Genoese at Crecy had spear carrying pavisarii with them and that it was their pavises which were left with the wagons. His essay is here
I haven't read much about Crecy, so I don't know how secure this idea is.