Translation of "decorous" into Arabic

She said it was smart to paint it white, that the guy who did it should be decorated.

وأن من قام بهذا يستحق أن يقّلد وساماً

Well, would not the above reasoning still apply as long as they conducted themselves in a decorous and respectable manner?

الا تنطبق عليهم الفكرة الآنفة الذكر ما داموا يتصرفون بطريقة محتشمة ومحترمة؟