It's true that XMIT's KB-101A has Whites. But are you sure all TI KB-101As do?
Many boards with the same model number or name have been made with Blues or Whites, such as these mentioned on DT's Alps SKCM Blue page:
• Chicony KB-5160, KB-5161
• Focus FK-555, FK-2001, FK-2002
• Leading Edge DC-2014, DC-3014
• Monterey K104
• NEC PC-8801 Mk II SR
• Northgate OmniKey
• NTC KB-6151, KB-6251, KB-6252
Some makers even alternated between them—depending on supply, I suppose. I doubt the makers cared, as they were both new, clicky switches that performed comparably. In those days, no one bothered mentioning switch types on their packaging or in their advertising, as the public wouldn't have a clue what it meant or what difference it made.
It's true the TI KB-101A isn't included in DT's examples of Blue/White boards, but I don't think that many examples of them have come to light, have they?
Oh no, I just warned because of the likelihood of the boards using white Alps. Call it presumptuous, but I just get the feeling that some boards did not deviate much in the switches used while others, like the Chicony and Focus boards, have a plethora of different switches. Acer seemed to be pretty consistent, but I might be jumping the gun, sure.

Due to the 1990 date, it does seem unlikely though, even without the evidence from XMIT; the latest blue Alps boards I have come from 1989, both the DC-3014 and the KB101A, and even that was a bit surprising. Unless they're running through different batches with some surplus stock of blues, then I just don't see it having blues.
You do make good points though. My Acer KB101A is a Datapoint rebrand, and this is a Texas Instruments rebrand, however... This version has an entirely different serial number structure and label that makes it seems as if this was specially made for Texas Instruments. It doesn't even mention Acer on the label.
Here's my Datapoint KB101A, which is more so just a simple rebrand where they slapped a sticker on the top bezel:

If the TI board was any earlier than 1989, then I'd also wonder if it had blues. Even with the boards that have had a bunch of different switches throughout their life spans, there's usually a range you can work with when it comes to serial numbers, mfg dates, or other identifying features to figure out what switch it will most likely have.
But like the gold label Northgate Omnikey 102 boards (they are usually blue Alps, but can sometimes be white), it's possible for things to not line up sometimes.
1990 date on the back leads me to believe the white Alps story.
By the way, E3E, can you rehost those images in the top post here to imgur or somewhere? When the ebay listing page inevitably disappears, this thread will lose important context for anyone reading it a few years down the line.
No problem! Done and done.