You didn't mention where you want to put it? Bow rail or aft mount (on fiberglass)?
Yes, most marine stores should carry chrome.
Over the last couple of years, Sea Ray has had a very nice flag pole as an option. It's a bit pricey, but it consists of a flush-mount socket (doesn't stick up) and a pole that sticks in via magnetics. Both pieces are SS and VERY sturdy.
The SR one will only work with it's corresponding mount. But, you could replace the current mount with the SR one. The last time I checked, the list price was about $125 for the mount and pole, not including shipping. Like I said, pricey... but nice. You might be able to find something very similar through the aftermarket.