I've had Dektol which was amber, but the powder always started a brownish color, when it happened (old stock). Never had it happen with fresh powder, or when the powder started white, though. The amber stuff I mixed worked fine, and I was able to match prints from prior sessions (using clear Dektol) with ease. Once diluted 1:2, it was easy to see the print in the developer.
Could there be an issue with your water?
Sorry I can't offer more info, but I wouldn't hesitate to use it.