Doesn't look like it to me! But pictures don't always do a snake justice. Here is a pict. of mine, although he is younger, you can see the markings you where referring to.
"Kabal" my male Black Pastel
Not to steal the thread but your boy is an awesome example. That rich dark colouring on him is sweet. My girl is really light compared to him, and the massive squiggles on him make him look sick.
1.1 Het Pied
0.1 Pastel
0.1 Butter
0.1 Black Pastel
1.0 Pinstripe
1.1 BCI Het Albino
2.0 Australian Labradoodle
1.0 Bull Weiner