Newt not morphing

I have two baby newts that I found almost 2 months ago in my tank. One was slightly smaller when I found them but they are now about the same size. The first one I found seems close to metamorphosis-has significantly smaller gills, a more defined tail (there is no fin left to it, it now looks like an adult newt tail) and has turned black with a red belly. The other newt is usually brown, but changes from day to day and I have seen him go from black (like the other newt) to almost white. His gills have shrunk very little and his tail still looks just like it did when I first found him (lots of fin). He is growing at the same rate as the other newt, acts the same, eats the same, everything...so I'm guessing there's nothing wrong with him. Has anyone else had this happen? Is it normal?
Kim

He is actually might lighter than the picture shows, and he was black last night. His gills are always black- they do not change.

Some larvae do change colour usually with different light conditions so this is perfectly normal. Do you have a spot where they can leave the water when they need to? as they can drown if not, be patient and you'll soon have yourself two little juvenile fully formed newts.

This is a pic of the two together, the black one now has no gills or tail fin left and has been crawling up the sides of the tank (rather than using the rocks and plants provided to get out of the water) the past couple days. Its interesting to note the differences between the two considering they were raised in the exact same conditions. The lighter colored one has some gray mottling on it today.
Kim

It seems normal to me. The less-developed one is probably just a bit younger. And they do change color (darker/lighter) sometimes.