Is it possible to change the color of containers and other elements with this?

[nmcain]

Basically, I have some widgets on the screen that are not buttons and are manually colored, is it possible to have the code set custom colors for them or maybe make the color into a variable that can be called from their styling?

In this image, I want the black background to be a semitransparent white

I have no idea where this blue color comes from, either, I have the default red and indigo in the code, so I am also super confused there. I want to be able to have the user click the theme button and have it cycle through all of the material colors, but no idea how to implement that.

[MALLORY8K]

interest me too