Can anyone please tell me the original default colors, all three levels, for email replies?

Mac Mini. OS: Big Sur, version 11.7.10

I made the mistake of changing the colors for the three reply levels in my email account. I read about it and realized how helpful it could be in my sorting (plus I thought colors I like would be fun). It was easy to change and worked great for about a year, but then started screwing up. First, two replies would run together, all in the same color, so it looked like one long reply. That meant all the earlier replies, below that, were "wrong" colors. That problem kept growing, and now it rarely attempts colors at all. Everything in the chain is in black ink.

I can't find a way to fix it. My last resort is to change back to the default colors, in the hope Mail can at least handle that. However, I haven't been able to find the default colors listed anywhere. I'm pretty sure the first one is blue, but am not sure after that. Any help would be appreciated. Thanks.