Is it possible to give a text a colored background and certain distances?

you can control somethings with the properties panel, but not nearly as much as you can control with code.

for a dynamic textfield with instance name tf, use:

var tfor:TextFormat = new TextFormat();
tfor.blockIndent = 40;
tfor.color = 0x46C944;

tf.width = 120;
tf.height = 50;
tf.background = true;
tf.backgroundColor = 0x000000;
tf.text = "Lorem Ipsum";
tf.setTextFormat(tfor);