The Carada screen frame does not sit on the ground, but is mounted just a few inches above the floor. We used this gap as a place to run various wires for L/C/R speakers, control wires, and some just-in-case future speaker wires. (I also have some wires hidden in the bulkhead should I ever want to do height channels).
To hide the gap between the bottom of the Carada screen frame and the floor we cut two thin boards, spanning the length of the screen frame to cover the gap. The Carada Masquerade screen frame is covered in their "Black Hole" material, which is a very dark, light absorbing black material. To ensure a matched look, I bought some Protostar flocked light trap material:http://www.fpi-protostar.com/flock.htm
Someone else had mentioned it was a match for the Carada screen frame covering and upon receiving a sample it did look almost exactly like the Carada "black hole" screen frame covering.
Once the boards beneath my Carada frame were covered with the Protostar material the match was virtually perfect. This is an overexposed image:
The part that says "Carada" on it is the Masquerade Screen frame. Above it is some of the masking panel, below is the strip covered in the Protostar material. Under normal light conditions it looks totally seamless.
On the floor in front of the screen the boards are now covered with the Fidelio black fabric,
sticking out a couple feet along the floor, which gives a cohesive "stage" effect under the screen.
For a while I wondered if I might do the screen wall valance/bulkhead and side masking panels in the Protostar material, given how easy it is to work with. But I went with the Fidelio black velvet because it looked significantly richer and, surprisingly, significantly darker as well!