Thanks for enjoying the Themes.

I used Firefox's built in tools to create them, sadly using just those tools you cannot edit the drop down menus or menu colors, only the theme at face value.

I'll create a few more colors soon, however Red was one I originally created but it seems it still isn't doable.
For some reason Folder and Menu Text gets an artifact effect that basically shows a shadow letter with red on the front and white on the back. Search bar and text looks wonderful but the others ruin the theme.

Edit - It seems all darker colors for text in those areas does what I mentioned above.
The Black, Green and Red theme I made shows the limits of what can be done with color placement, the Red section is the section that can be made darker colors and work, the green section is what does the shadow letters.