Let the blob see in the dark

[libbmaster]

Just had my first blob round. It was very fun - probably because the crew was distracted with admin antics however.

One thing I noticed is it's very hard for the blob to see where it's expanding when the environment is dark. It would be fantastic if blobs could get a "toggle lighting" option like ghosts - it would make spreading through maintenance hallways and bombed out parts of the station easier.