Does my phenidone look OK?

I've had that Phenidone since long, in a glass bottle with a tight platic cap. Have not used any in a long time. Could someone tell me if the color looks like fresh phenidone, or somewhat discoloured? I know it's no guarantee for a critical application, yet any indication would be welcome.

Phenidone is usually a light tan sometimes with a pinkish cast. It looks OK to me. Keep it away from light, heat and moisture.