Used soft top with bottom discoloration

I'm considering this soft top longboard for my husband. He's 6'5" (198cm) so I'm looking for a 10' to 11' board. I saw this listing but worried about the discoloration on the bottom. Any thoughts. Link to the listing is below:
http://orangecounty.craigslist.org/spo/3935411897.html
http://orangecounty.craigslist.org/spo/3935411897.html