It's really more a theological issue more then anything; the "favourite fruit" vs. Favourite colour paradox has plagued man for centuries. great thinkers have died trying to solve the question that you just posed, mainly in the form "my favourite colour is X, but my favourite fruit is Y, which isn't X.. why?".
I believe it lies in a certain strand of DNA that holds our important data structures: for example, by studying the human genome, scientists have made an amazing discovery- all of our basic instincts are stored as C structures. For example:
typedef struct
{ COLORREF Color;
IWeasel Weasel;
}; FAVOURITECOLOUR
via this amazing code, we see two members: a color, of course, and a handle to a weasel. "a handle to a weasel?" you say? well, researchers discovering this structure encoded deep in our DNA have discovered that the brain will dynamically change the value of the Weasel Member to point to a valid weasel if and only if the person is either holding a weasel or another animal that implements the IWeasel Interface, such as ferrets or chipmunks. What relevance does it have to colour? That's a good question that the researchers also raised. They determined that while holding a weasel by it's tail, the favourite colour's hue was inverted This was amazing news! similar tests were performed with trout,cats, and polar bears, resulting in slimey hands, an allergic reaction, and instant mauling respectively, but none of the 2 surviving subjects found their favourite colour change during the experiment. (the critically injured subject who later died was disqualified for only being able to see red)
further exploration of the genome revealed many other structures were revealed, such as that used by our internal spelling:
typedef struct
{
char*[] Letters
IPolarBear Bear
} Word
as you see, we use C arrays. research has yet to determine the meaning behind the "Bear" member, as well as the real definition of the IPolarBear Interface; many are curious to see if the IPolarBear interface is merely a subclass of the IBear interface.