Ryan
It is only a very small fish. Most oscars at that size are generally 'colourless', depending on what foods they are fed. Obviously fish fed 'colour foods' will develop red colouration much sooner. As you bought this fish from city farmers, I acn probably assume this fish has not been fed colour enhancing foods (well at least not recently). Looking at the picture you can see the orange/yellow coming through on the stomach already. Having bought it from a chain store - it would be a tiger oscar.
'Wild Type' is just a bit of a misclassification of oscars based on appearance for captive bred mass produced fish. I don't think the term 'wild type' should be used unless they are progeny of wild caught fish. Then they would typically be F1, F2 etc.
The fish you have purchased is just a regular run of the mill Tiger Oscar, Which is fine, they are still nice fish. But this calling every oscar that has less red than is usual for a Tiger Oscar a 'wild type' is not correct, and I have seen others recently selling them as such.
I purchased 8 genuine Wild Caught Oscars about 4 years ago. Surprisingly they didn't look anything like your fish. Almost jet black in colour and bright red patterning (some were almost devoid of any pattern). The head shape was also much pointier than standard multigeneration captive bred oscars. Their temprament was also very different, much more aggressive than standard oscars, more comparible to a dovii. Even at a young size and in a group of 8 mine would beat the crap out of each other. I gave some of these too a good mate (I think 3 or 4?), and he still has one, and it is the perfect specimen of what a wild oscar should look like (IMO). Their is always a bit of debate with wild caught fish, are they really wild caught? But after having kept this group of wild oscars, I have no doubt they were indeed the real deal. This was more based on attitude and behaviour than appearance (although the appearance is bang on).
Notice the pointier than normal head on this fish and the typical 'wild oscar' colouration.
Alex