Hi,
I don't know if this problem is only on the HM700, i saw these things on other cameras also.
I talked with the JVC guy in israel and he said to try to put: "Matrix- off"
we will try...

the problem will be also get with other systems, thats not a effect by the gy-hm700.
you can try to turn: Matrix -off

it will be nice to tell us the difference.

but, i think, the reason are the basics in physic science...adjust the cam´s by blue light you get a better result, but the other one scenes w/o blue will be darker.

the red color in your video also is overlightet, not only the blue. the red color is near at blue wavelenght as green. you should get less blue or red lightning.

try to pull down the color to black&white by same conditions, you get also a overlight when turning the blue stage lights on, blue LED Stage Lightnings not the best for elelctronic cameras. with ccd or cmos.

Good luck,
Thomas