They wouldn't be hybrids, as both are the same species. Intergrade might be more appropriate.

Red can be found most anywhere on the eastern subspecies; it is where the most of the morphs like flame's etc come from. It is a highly variable subspecies.
You really need locality data (or of course a large DNA database to comopare to which probably exists as T. sirtalis is one of the most studied squamates in NA) to determine with a high degree of confidence.

In my experience, this is not a T. sirtalis parietalis from Canada. I've been surprised by variations found in the states before, but agree this is a T. s. sirtalis if not an integrade between the two; which is very much possible.

Ian