The strip of beige plastic with the apple logo running down the right side of the screen is a flip cover for the monitor controls. Try fooling with them. I think one is a color adjustment dial, another is brightness, and a green button toggles between monochrome and color. The monochrome is whatever color has been selected via the 2 DIP switches on the card (green, blue, amber or white)
Yes I discovered this last night. If I turn both dials all the way up
(well most of the way up), I get a normal looking screen but as I said,
some of the colors look 'off'. In Kings Quest for example, the first
flag on the castle on my composite monitor is almost a hot pink, but on
my RGB monitor its a more muted lavender. The grass isn't a bright
green, its more of a dull green. Everything just looks a bit dull, and
I'm not sure if this is because my composite monitor is off and this is
the way it's actually supposed to look or if its just a side effect of
the RGB monitor. One thing I did notice right away is that I don't see
the 'lines' I used to in solid colors. It's hard to describe, but on
my composite monitor if I look at a solid color I can almost see little
rows of lines. On my RGB monitor everything is nice and solid like it
should be and the text doesn't have that annoying pink fringe!