I have heard that pink is the navy blue of India.
Really, color is such of a personal thing. I agree with papertiger that it's best if the color really resonates with you.
I get the sense from your first post that you like the bag, but the color wouldn't be your first choice. If you don't love it, I say pass, even though it might be a good deal. I'm sure every woman on this board has bought a bag on sale, because it was on sale, and then later come to regret it.
On the other hand, if it's a WOC, it's small, and probably not a humungous financial commitment. If you don't love love love it as a bag, you can always use it simply as a wallet inside of your other bags.
As to the longevity of pink, I can say that I have loved pink for several decades now. It mioght be having its moment in the limelight, but it's not a weird strange color like neon yellow or something ultra trendy. I wouldn't hesitate to buy a pink bag on the basis of its color.