Well, when building on the ground, if I need a different color, I usually just cover the baseplate with the appropriately colored bricks or plates. Now, for uses as a backdrop, that would obviously be a bit harder.
I do have a nice tan knock off plate, no idea what brand, that I use all the time. It works just fine, but is a teeny bit thicker than the real ones. Tiny size differences aren't a big deal, but you'll want to be aware of them. Clutch power, on the other hand, makes a huge difference, and is the single reason I hardly ever use the few Mega Bloks bricks and plates that I own. Again, as a background, that won't matter.
Building block toys are all copy cats of Lego, and like the knock off Thomas the Tank Engine trains I had as a kid, they will all fit together just fine 95% of the time. If not, then it is probably too cheap to even bother using.
However, to answer directly, the reviews on those plates are clear; they are compatible. It's only a matter of how purist you are. For myself, I need a really good reason to blatantly use knock off stuff, but don't mind mostly invisible things like baseplates to be non-Lego. I doubt many will notice, and only a handful will give it a second thought. So don't worry about it, if you're OK with it.