I have been saying for about 9 months that the big green NIB sponsorship logo was likely to be going for 2023.
Once NIB unveiled their new logo (after production of the Knights' kits had begun), I noticed it was just a white logo sitting on the blue background of the Knights' website and a dark green logo on a white background. That, to me, indicated that they no longer required a green box to complete their logo.
I'm so glad I seem to have been right all this time!
We did have a silver alternate jersey in about 2008. The silver was only marginally different to white, but it was silver (grey).