Appreciate that, and thanks a bunch for giving it some effort. I think the systems I put in the game are maybe not as clear as they should be. Actually uploading a video now to shed some light on all that.
And yeah, those sprites are based on some textures I created and manipulated in Photoshop to create individual assets. I wanted the graphics to have a look of being visually connected with slight variations, so I made the shapes and colors as their defining characteristics. I thought is was a fun and simple visual effect to keep the textures static as the shapes moved within them. Really glad you enjoy the look!