You will only be able to restore your studio stainless to its original finish.  Regarding your second question, it depends on which customized specs you mean.  I am not sure of what custom options you can get directly from Titleist without going throug the Custom Shop.

Hi Kris,  Glad to hear the driver is working for you!  Johnny is right, the custom shop will only refinish back to stainless.  On your new putter, we will make the 34" and 35" with heavier weights, change the loft 1° and the lie 2° and we offer 33", 34", and 35" putters.  Anything outside of that has to be done at the "custom" shop.  You can go through the custom shop menu, order all the different specs that you would like, prepay it with a credit card and the custom shop will send you a Work Order number.  Take the number to your local pro shop and have them order the putter with that number.  When we finish building the putter, we will send it to Scotty's custom shop for "customization" and they will ship it directly back to you.  It will save you the step of shipping back and forth.

^{Thanks Cathi. One more question: can I order a new putter with the charcoal finish. I am looking to get the Newport 2.6}

Unfortunately, the 2.6 only comes in the standard finish.