I've had one snake for a year and kept her very healthy, and so when I found another one in the road (they tend to get run over in my town frequently, sadly), I had to rescue him (well, maybe a him.. I thought my first guy was a him until she had babies!). Now, this new little guy looks very similar to my first snake. I'm going to photograph them each separately in detail, but any good tips or tricks for telling them apart?

I thought for a minute, and this sounds crazy, but using non-toxic food coloring and sticking a dab on the tail might be a totally safe, easy way to tell them apart, but there must be some better ways. Open to any and all suggestions!