That wasn't clear to me either, and threw me off in trying to work out which were the called and which were the uncalled states, so I definitely think it would be helpful to have a different indicator for that. Once you have that, I think the white lines may be sufficient to indicate called vs. uncalled - I thought that was what they meant before I noticed Virginia in red, but then I got very confused and starting doubting whether I was interpreting any of the chart correctly at all.