Once you have a few of each you'll see the differences in them.
The Bells are so much different then the other. Color more of a deeper pink when hatched and turning a burgundy color. They also tend to be more spotty, with smaller spots. And Bells pupils stay redder.
RW & Trempers can be a little harder to tell apart. The eyes can help with these two. Trempers tend to loose some of the red in the pupil, but not as much as the RW. RW's tend to go black. Trempers can also turn a brownish color when cooled, that won't go back to the nice pink color.
Right on felicia:main_thumbsup:
Here's a few pics for you.
Here's a Bell (notice burgundy color)
and a pic of a bell hybino's eyes
Now here's a Tremper (LOL Brown)
Tremper eyes
and unfortunately I dont work with any rainwaters but here's a good link to see some. Also a great site to see the comparisons. http://www.geckosetc.com/htm/breeders.htm
Hope this helps:main_thumbsup: