[6pack] Green hoses now black!

[TR250Driver at aol.com]

Hey Guys,
What's up with my repro green hoses that have turned black over the winter? 
 I have a combination of NOS and TRF hoses that I just installed last  
summer.  The repros that I replaced were alright. Now I have nice  green NOS and 
dirty, almost black looking repros. Anyone else have this  problem?
Darrell
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