Wrong color used for selection when not an edge.
Wrong color used for selection when not an edge.

Fixes #36

Signed-off-by: Gordon Smith <13c8c321b71403ffa9e1e91d85b30cb848a7b170@lexisnexis.com>

GordonSmith/GraphControl,hpcc-systems/GraphControl,xwang2713/GraphControl,hpcc-systems/GraphControl,GordonSmith/GraphControl,xwang2713/GraphControl,xwang2713/GraphControl,hpcc-systems/GraphControl,hpcc-systems/GraphControl,GordonSmith/GraphControl