I try to set background color programmatically but when I set every one of my colors, the background being black but with any color background being white like the application theme.
View someView = findViewById(R.id.screen);
View root = someView.getRootView();
root.setBackgroundColor(color.white);
Can you see the code?
I didn't understand your question ... what do you mean by "when i set every one of my colour"? try this (edit: "#fffff" in original answer changed to "#ffffff"
yourView.setBackgroundColor(Color.parseColor("#ffffff"));