Use code search on your JVC URC to find something that handles some or all function of your Coldstone TV. If a search through all codes stored in the JVC URC fails, try a different one.
Universal remotes have severe limitations and aren't suitable to replace a lost or broken original remote.
If a genuine replacement cannot be found, try searching for a compatible remote. These provide most of the functions of the original including menu access. I think I bought mine from Amazon or ebay and it cost little more than a good universal.