Android FireFox Status Bar Coloration

Does anybody know how to adjust the status bar color along with its text on android mobile devices when creating a theme?

I have tried a test theme in which I set every available field to highly contrasting colors to see which one the status bar and its text would become, but even with that, it was an odd pea green color that I had not set any field too.

When just trying other themes from other users, the status bar and its text would switch colors.

Anybody with some insight?