fix coloring of edges in pipeline svgs
fix coloring of edges in pipeline svgs

Signed-off-by: Kim Eberz <54f6dba7fc2457760a735c390848ac756e4e6baa@gmail.com>

concourse/concourse,cjcjameson/concourse,concourse/concourse,cjcjameson/concourse,concourse/concourse,concourse/concourse,cjcjameson/concourse,concourse/concourse