Thank you so much, this seems to have solved it. So based on the code you provided and the small amount of knowledge I have about it, is it correct that the dark color were basically overlaying the gradient from my code?
Also, do you know what caused this? Only thing I can think of is upgrading sections to the Fluid engine, but I'm fairly certain that the gradient worked a while after upgrading so I'm not sure if it's even related.
Again, thanks!