Here’s 2 threads that show the development of the logo.

Satoshi initially created a logo -
https://bitcointalk.org/index.php?topic=64.20

Then member  Bitboy refined it -
https://bitcointalk.org/index.php?topic=1631.40

The logo started gold and then appears to move to orange , apparently as it’s more bright/ distinguishable?


Image from https://blog.logomyway.com/bitcoin-logo/

Sorry not a definitive answer, but hope it helps