Slants turned color

[Brewddah]

I was looking at some slants I made months ago, and the yeast has kind of turned tan. Is this a bad sign? Should I re-slant them?

 

[danthebugman]

How long is "months" ago? Also how are they being stored? They typically turn a brownish color as they age. If they look the color of peanut butter they're toast, but a light tan should still be good.

 

[Brewddah]

March of this year. They're in the refrigerator.