Blue seconds hand for 253 would this be hard to source?

[bam rock]

Hello again everyone,
Well I'm back and picking up another PAM from a member for a pretty good price but the blue seconds hand on the 253 Panerai Flyback Regatta is no longer blue. Not sure what happened there but I was just curious as to whether or not you think I could source a blue seconds hand or if you know what other watches it might work from. The movement is the old Asian 7750 21000bph. Any ideas why the seconds hand would not be blue anymore in the first place? This isn't something that will totally kill me, and there's only 500 anyways so the last tell for anyone that truly knows will be the off colored seconds hand. But I think I know someone that could perform the swap locally if I could pick up the hand for a decent price. Anyways...I appreciate any help in advance!
Bam

 

[tbone]

Check out this site for more details on bluing steel; http://www.finishing.com/411/25.shtml

 

[bam rock]

Thanks for the quick replies everyone! Another question now is what do you think could be a possible cause for the seconds hand losing the blue color? I imagine that this watch originally came with the blue seconds hand and now it has "faded" for whatever reason. Do you think it is that the chemical treatment wore off? With my elementary understanding of chemistry, I would think that it would be a physical change that will not just turn back unless something caused it. Thanks again