The Wube logo on space platform is actually a different object with different graphics compared to the "on surface" versions, so new graphics would have to be made for them.
This file has to be edited:
data\space-age\graphics\entity\wube-logo-space-platform\wube-logo-space-platform.png
I don't remember what I did with the old design, but considering I'm not an artist, it's more work than I can currently give it.
