What grill cloth came on Marshall cabs in the '70's?

[SlyStrat]

What colors of grill cloth came on 4x12 Marshall cabs in the '70's? Especially around '76?

[lakehaus]

I had a '74 B cab that came with (I think it's called) checkerboard. Here's what it looks like, and what I'm used to seeing from that era:

http://www.virtualvintageguitars.com/portf/images/marshall_cab.jpghttp://fretmill.com/wp-content/uploads/2010/08/1960bx.jpg

[VanR]

I wonder what ever got in Marshall's mind to start using that horrible black grill cloth they use now? Just awful and not classy at all.

[StoneAge Cabs]

Marshall phased in the more aggressive looking black weave cloth, in part, to coincide with the bolder appearance of the master volume series amps.