Palettes 
Here's some palettes that you can put in your game to alter the regular colours! Palettes require Prism's PetzA Update to work, and can easily be placed into resources/palettes and either used with the palette swapper, or be built into a single pet. If you'd like to find more palettes to use, I suggest exploring Queenie's Palette Masterlist.
Feel free to use them for your petz, but if you choose to distribute petz that have them, please do not:
✦ Use on innapropriate/offensive petz
✦ Use without crediting me
✦ Claim you made them
You're also free to edit them as you'd like! Just follow those past rules, please! I'm also okay with others hosting my files to preserve them in case something happens to me/the website, just again, please acknowledge that they were made by me.
Minecraft
A palette with all of it's colours referenced from Minecraft blocks! Affects all texturable colours, as well as 150-159 and 244.
Not-Cat
A palette inspired by the colours of Pixel Cat's End, a cat adoptable game with a lot of lovely muted colours. Affects 1-6, 10-189, and 244.
Rescue
A cute palette inspired by the palette of the game To The Rescue, which I figured would be fun given the variety of dogs in the game. Affects all texturable colours, as well as 244.
Procreate Mocha
Based on colours from Procreate's Gradient Map palette, "Mocha". Affects all texturable colours.
Procreate Venice
Based on colours from Procreate's Gradient Map palette, "Venice". Affects all texturable colours.
Procreate Breeze
Based on colours from Procreate's Gradient Map palette, "Breeze". Affects all texturable colours.
Toasted
A palette based on the beautiful Toasted 40 Palette that I love to use for pixel art, this makes petz have slightly softer and warmer colours. Affects all texturable colours.