[Boot Hill]

Good thought, but depending on how they implemented the color scheme, switching back to black & white may not return you to the best possible black & white sensitivity. TANSTAAFL works in engineering, too.

Regards,

Boot Hill

[HiTech RedNeck]

I'm thinking two sensors. One specialized for monochrome, the other for color; best of both. To avoid distracting the user, it wouldn't change mode with shifts of illumination, until the user hit a button. There might be a little blinking green light at the corner of the eyepiece to indicate the illumination is sufficient for color, and a red one to advise switching back to monochrome.