Make the blob nucleus more visible

[Grayshift]

Chipping in to agree. At least 75% of the blobs I've fought lately have been #000000 and having to run the mouse over every tile even in well-lit areas to find the nucleus is bunk. You don't win battles of attrition with a blob. Sneak in and snipe nuclei. Having to waste time actually seeing the damn things is obnoxious.