From A330-300 FCOM:
EFFECTS OF THRUST LEVER MOVEMENT WHILE A/THR IS ACTIVE
When both thrust levers are set above the CL detent (both engines operative) or one thrust lever is set above MCT (one engine operative) the A/THR reverts from active to armed. "A/THR" turns to blue on the FMA and the thrust levers control the thrust directly. The FMA displays "MAN THR" white in its first column.
Best regards