The were in such a hurry to cover up the alitalia connection that the windows got painted white as well, but somehow they had time to leave the non-Italian registration mark and Romanian flag intact.
There we go again!
Registration markings (this includes the national flag, when mandated) are a legal requirement and cannot be removed or tampered with for any reason. To do so would mean risking criminal prosecution. Other markings such as an airline's logo are merely cosmetic and can be disposed of at will.
Unlike some uninformed posters to this board, the people who performed the paint job knew very well (or had been previously properly instructed by someone knowledgeable) which parts they could paint over and which areas were off-limits.
This way of operating - finding a low quality operator to do your flights in your livery - and then shedding the connection as soon as something goes wrong - should be considered frauding your customers.
Who's shedding what? If anything, Alitalia's management is strenuously defending their outsourcing decision in the national press, to the point of incidentally repeatedly shooting themselves in the foot.