Items it's considered a crime to use or steal are Orange when you hover your cursor over them. Some people have had trouble seeing that though. I've recommended they make it red as well.
I agree that it's not always obvious what a weapon type is. Right now you have to look at the action points it costs to use. Daggers are 2 AP, single-handed weapons are 3 AP, two-handed weapons and bows are 4 AP, crossbows are 6 AP.
