Thank you everyone for your input. Sounds like testing is the way to go.
Here is the pedigree of the dam of the foal....NY Acres Laurel Ranch Pecan Sandi. She has had a red roan pinto for us when bred to a palomino pinto, and two colts and a filly the same color as she when bred to a blue roan appaloosa. Her color is very dominant and now bred to a silver bay stallion we get the color in question.
This is a photo of the dam. She has a prominant dorsal stripe but no leg bars though her son below definitely does.
There are so many wrong colors in the studbook it's hard to know actual colors but here it is
NY LAUREL ACRES RANCH PECAN SANDI
Pedigree report
07/09/2006
****1***2***3***4***5***6***7***8***9****************************************
| | | | UNKNOWN - UNREG.
| | | KOMOKOS KING TUT - R 00242P
| | | |[00/00/1968 : G : SBA : BT : DC : 30.000]
| | | | UNKNOWN - UNREG.
| | KOMOKOS LITTLE HUSSELER - R 02360P
| | |[05/01/1974 : S : SDN : BT : - : 26.500]
| | | KOMOKOS LADY BUG - UNREG.
| NFCS IMA DANDY HUSSELER - A 14097
| |[03/11/1986 : S : RNB : BT : - : 32.000]
| | | | FIELDS LITTLE BOY - UNREG.
| | | DELL TERAS MINUTE MAN - A 05319
| | | |[08/16/1966 : S : SBA : - : - : 30.000]
| | | | FIELDS MOUNTAIN GIRL - UNREG.
| | DELL TERAS SANDY DANDY - A 06367
| | |[03/09/1983 : M : SBA : DN : - : 32.500]
| | | DELL TERAS MISS MARTHA - UNREG.
NY LAUREL ACRES RANCH PECAN SANDI - A 32586
|[04/07/1990 : M : SBS : QB : - : 33.000]
| | | | UNKNOWN - UNREG.
| | | DELL TERAS BUTTONS - A 03571
| | | |[00/00/1968 : S : SBR : - : DC : 30.500]
| | | | UNKNOWN - UNREG.
| | DELL TERAS LORD OF THE ISLES - I 00120
| | |[07/20/1972 : S : SBA : - : - : 29.000]
| | | DELL TERAS SILVER MIST - UNREG.
| LOW COUNTRY LAMBCHOP - IT00048
| |[03/00/1976 : M : SDN : BT : - : 33.500]
| | | UNKNOWN - UNREG.
| | DELL TERAS MISSY III - I 00115
| | |[03/08/1968 : M : SBA : - : - : 30.500]
| | | UNKNOWN - UNREG.
Here is one of her sons.....
and here is a daughter.....
This is the dam and sire of the foals silver bay sire
Dam.....Rose Buds Irish Rainmaker
Sire.....Cross Countrys Call Me Sir