Hey, thanks for the kind words and the helpful criticism.
The white versions of all the sprites are included to allow recoloring them in-engine. Additionally, it was made in Aseprite, which allows you to replace colors across all frames and layers in a sprite to easily change them using the color replace feature. You can select all frames then press Shift + R, to replace one color with another. I hope this is helpful.
If you would like a refund, please let me know and I’d be happy to help with that too.
Thanks again.