The Washington Post actually has an article on the tackification of the Oval Office a couple of months ago.
Curious about the tackification of the Oval Office, I skimmed the official White House photo feed. As it turns out, the gold elements in the room were added slowly, not all at once. Photos in my (free to read) newsletter.
s2.washingtonpost.com/camp-rw/?tra...
— Philip Bump (@pbump.com) 2025-05-05T15:21:40.072Z
https://s2.washingtonpost.com/camp-rw/
As I was writing it, I realized that a companion piece might be warranted. Among the less-important ways in which Trump is subverting tradition is his gaudy overhaul of the seat of American power: the Oval Office itself.
Consider this image, for example, showing Trump meeting with staff including his soon-to-be-former national security adviser Michael Waltz. It was taken on April 30, the day before Waltzs ouster. Gold trim and appliqués are ubiquitous.

That photo prompted two questions. First, how different was it from the Oval Office during the Biden administration? Second, when did the change occur? My search for answers led me to official photos posted to the sharing site Flickr (remember Flickr?), where I learned that the answers to those questions were very and slowly.
Lets start with the photo below, which shows President Joe Biden welcoming Brittney Griners wife to the Oval Office in 2022. Notice the doorway and bookshelves on the back wall. Neither has any visible gold.

....By early February, little splashes of gold started to appear. In the nooks above the bookshelves, gold vases were put on display. Some sort of gold figurine was placed above the doors transom.

By late March, Trump was settling in. The pictures near Ronald Reagans portrait had changed. A portrait of Andrew Jackson and its brownish frame had been swapped out for a gilded one and another portrait with a thick gold frame was crammed into a formerly empty space.

.....
You can see the full effect in the photo below, taken on April 10. But the improvements werent done yet. See those two brown chairs against the wall to Trumps back? Notice that the wall behind them is unadorned.

By April 16, that space on the wainscoting (lots of architecture terminology today!) had also broken out in gilded hives.