So, the metric conversions on your grain bill:
10lbs I assume 2-row
.3lbs. xtal 140
.3lbs cara
The crystal is definitely the culprit, though settling and fermenting (and then pouring into a glass) will lighten it some.
As an example of my pale ale bill:
8lbs 2-row
2lbs toasted 2-row (toasted in my oven)
.5lb xtal 60
.5lbs flaked wheat.
Turned out around SNPA color, and a BeerSmith estimate of 7.3. The point I'm digging at is, crystal malt and dark malts like black barley will change your final color with very, very little percent of the total bill. It's quite cool, actually. In the long run, drink it and pretend it's supposed to be a little darker than a pale ale. I don't think, though, that it'll be all that dark. Kyle