Like @wakeNbake said, I was using bright lime goo to mutate into my bright moss gleam to get bright moss pigments. Not more atm since an exo appeared with lots of bright moss goo.
I can’t really help here on mixing cause I have all the color gleam in my farm and I can already have all the color pigments for my projects without need to mix.
Goo will always be below 100% seed yield when harvesting your own crop. 80% seed return is (in my opinion) optimal, since you’re producing a vast amount of pigment whilst losing 20% of your kernels.
How you farm goo depends upon the result you are after. If you want to color change the seeds, you need to grow it on gleam. If you want maximum pigments, it needs lava/rock/growth. If you want to maximize pigments while retaining seeds…you’ll need lava+rock.
Some great info and farm examples in these threads.
here is a sample when I was messing around with 2 wide gleam and 2 wide rock to get both worlds… like @majorvex said… to mutate + seed use the gleam and to get pigment + seed you use the rocks… This method for me and many others is by far the best since you get some seeds back in return from both.
Note: there is lava going all around top and bottom but its just covered in this picture…
We all would but you can’t get over 95% seed yield (you can get way over 200% on pigment yeilds). You’re going to lose seeds…just make sure you go to Exos once in awhile to replenish your supply and/or buy kernels when you can.