>>I will agree that it is an "intergrade" if one of y'all can tell me the difference between a yellow & an Everglades. Remember that color alone is not a valid reason for sub-classification.
So, you think I should have answered the original question with one of the following:
1) Black Ratsnake (Pantherophis obsoletus)
2) A stripey, orangish color variant of the Black Ratsnake (Pantherophis obsoletus)
3) It's whatever subspecies is considered valid this month, ask again in a few months and we'll give you a different answer.
4) Count the belly scales, subcaudal scales and labial scales and check to see if the anal scale is devided and how strongly keeled the scales are and get back to us at, which time we will deate endlessly about what it is. 
As far as I know, the word "intergrade" implies noting about the level of classification of the two (or more) lines/groups involved.
By the way, what would you call it?
>>Also well north of the Everglades.
My 15 year old field guide shows the Everglades Ratsnake up to a bit north of Lake Okeechobee. I ASSUME that only includes "pure" Everglades and not the range of "intergrades" in surrounding areas. Either way, I think you could call that Central Florida.
If the original poster hasn't gotten bored and left already, could you be more specific about where you live?