Juvenile Robin Changing Colors

Perhaps it's a little bit of an overstatement to say that the juvenile robin is "changing colors". That might imply something really cool, something like a chameleon, where the robin is going from brown to green to red to blue, etc. The 'changing colors' that you see here is the emergence of the orange on the robin's breast, together with the speckles (that I assume will eventually fade?), and the white stripes that are on the robin's back (which, I assume, will eventually fade, too?). I guess you can call it 'changing colors'...