Here are five cases (including a Black one) that show a vertical slot for the dual camera and no hole for the fingerprint reader.
These look like the official iPhone 7 accessories and if that’s the case, we’re probably looking at more creative names for the colors like Flamingo, Pollen and so on. Of course, Apple has a wider selection of colors, so these are probably just a few examples of the full set.
The iPhone 8 itself has been spotted in Silver, Black and Gold. However, they are not exactly the same hues as those of the current models – the “gold”, for example, feels more like bronze.