The thing is that this time, Japan is getting them after us.
In addition to the six standard colors it already has, and the five million or so special colors available, it looks like Japan is getting two new colors to its GBA line-up. On September 27, Gold and Silver colored GBAs will become new primary colors for the system.
Now, before all you import-heads become angry over this, don't forget that both these colors have been available in North America for some time. Obviously, the Silver GBA was released as Platinum here in the US a month or two ago. The Gold GBA has been available as the Special Edition New York Pokémon Center GBA for more than a year. (You can buy it online for MSRP.)
There's no word if NOA will be releasing the Gold GBA nationwide (sans Pokémarks), or Japan's other two standard GBA colors, Jet Black and Spice here in the US either.