When I was a child, I saw an awesome large long watermelon (I'm guessing about 2.5 to 3.5 feet long and 1 to 1.7 feet thick, but I could be off considering I might have seen it in a garden catalog instead of in person). It was an awesome looking green one, probably with stripes, as is common for large watermelons. However, it had a cool red spot on the side (on the outside), maybe a few inches long (a kind of oval-shaped spot, with the long part of the oval going the same direction as the long part of the watermelon). The red spot was about the color of red watermelon on the inside (so, it was very red).
I've heard of moon and stars watermelons, and they have spots, but the spots aren't red.
So, what variety of watermelon (citrullus lanatus) has a (one) solid ruby red or crimson spot (maybe egg-sized, if the melon is 25+lbs) on the exterior of the rind of the fruit, wherein the rest of the exterior of the rind of the fruit is green? These are sometimes striped and sometimes not. I don't have a picture, nor do I have a way of obtaining a picture without knowing what it is, and I don't have the melon (I just saw either the melon or a picture of it ages ago).
Any green-skinned watermelon variety that may produce a red spot will suffice in answering the question. If you know of a watermelon with multiple red spots or that only sometimes has one or more red spots, that will also suffice. I've been curious about this for a long time. I should note, however, that melons with red skin do exist (the tigger melon for instance, although the tigger melon isn't a watermelon; there are also red-skinned cucumbers), but I'm only looking for a spot on an otherwise normal-looking watermelon.