Fully-centered and BIG-ASS are just fine for me as it remember perfectly the 8 bits from the 80s (c64, Amstrad/Schneider, Atari 800, Acorn, Oric, Apple II (despite being down off-centered, this one was BIG-ASS again), ...)
Remember the 1984 Apple Macintosh and the Atari ST, despite being professional 16-bit at this time, were themself (off-centered, ok), large-lettered and bold.
Personally, I do not see which computer of the 80's you're matching with the RETRO off-centered camel cased labels... IBM PC from the 80's ? Does anybody have some details and/or samples of this 'retro' reference?