BEagle,
That shade of green would be the same as I went when conducting my first stalling sessions in the UAS. My instructor, the Boss, became rather pi**ed off at my inept attempts in firstly actually recognising the stall and secondly doing something about it!! He then proceeded to demonstrate that it is possible to stall at any AoA - inverted, 90degress AoB etc!!
Quite an interesting and thoroughly useful lesson!!