Punnet square shortcut?

Is there a faster way to do all possible 2x2 punnet squares? I have been copying and pasting but that isn't very fast. I am doing phenotype punnet squares so the mother and father are still represented with alleles but the offspring are represented with phenotypes. All colors are incomplete dominant resulting in 1 intermediate for each multi color combination.

Here is the spreadsheet. The second sheet(which shows up when you open it) is where the punnet squares are. There is a sheet to the left of it where I display all the alleles:

OK, I recognize the term punnet squares from when Professor Mendel taught me biology back in high school. (Yeah, it's been that long). That's about all I remember. So re-educate me and maybe I can help you .

Can you walk us through one or two examples of how you get from sheet 1 to sheet 2, please?

The second example makes more sense to me. Basically you are looking for the combinations. So if we were comparing Luster you are looking for:
Non-metallic-Non-metallic
Non-metallic-Metallic
Metallic-Metallic

I am still not quite sure how you want to display this.

In the first example you gave in what cells on the Punnet Squares sheet do you put mom's alleles. What cells father's alleles and what cells for the offspring. I'm mapping "Lava" (Cell A2 on Sheet1) to which 5 cells on the Punnet Square page?

I got that the very first example is mom and dad both lava. Then I change one parent to Fire and repeat the process. Can you take a snapshot of what that would look like and post it in JPEG format (or as an actual spreadsheet).