I always found that the white keyboards and mouse looked dirty rather quickly. The white trackpad was not so bad. However, aesthetically, I hated the white keyboard/mouse/trackpad, but that is just me. Unfortunately the grey/black alternatives from 3rd parties always seemed to have significant issues with the pairing process and would loose connection at regular intervals (I used them, or tried to, with iMacs from 2001 until 2020), requiring me to reconnect them as I was desparately trying to type a critical email or edit a crucial document. So the Apple products worked fine but I was more than happy with the space grey keyboard/mouse/trackpad which is probably why they discontinued them.
I do know that the color matched keyboards for the new iMac look hideous to me. Call me old fashioned, but I would be completely happy with a space grey iMac and matching keyboards if I had a choice. The machines retire into the background rather than making a statement. But again that is my aesthetic which appears to be not where Apple is going. I am not going to stop using Apple machines because of their, in my opinion, ill considered color choices. But I am going to stop using them if they keep building machine that are not assembled correctly (see the skewed display issue on the new M1 24" iMac) and the software keeps taking the dive into Windows reliability territory (I use Windows and MacOS machines daily). The pain level in current software releases is very high and it is getting increasingly difficult to justify the investment in these machines. The "they just work" mantra is long gone and the loss of the keyboards I like is just another nail (albeit small) in the Apple coffin. Death by a thousand cuts as they say.