IMAQ Color learn VI - Color Spectrum Indicator

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Hi

i'm trying to get color in ROI using colorlearn.vi

when set color sensitivity low, color spectrum indicator has 16 element array.

i found each index has color value like this

INDEX : 0 ? / 1 red / 2 ? / 3 yellow / 4 ? / 5 green / 6 ? /

7 ? / 8 ? / 9 aqua / 10 ? / 11 blue / 12 ? / 13 puple / 14 black / 15 white

i want to know  ? mark index color 

thanks