Blue and Gray emails in Junk folder

I use SpamSieve 3.1 with Apple mail on my iMac and I have several Apple Mail rules in place. In my Junk folder I only ever see blue and gray emails. I get 6 to 10 new ones every day (that I see) and I’d get more if it weren’t for the Mail rules. I really apologize for having to ask this, but I can’t get my head around it; does SpamSieve have anything to do with what I see in Junk? I believe it must because they are colored, but haven’t you said that SpamSieve only puts emails in the Trash? If you do put then in my Junk folder, what do I need to do to limit them to the spammiest color?

Yes, SpamSieve colors the messages and moves them to Junk.

There’s a Move it to the Trash if the spam score is at least setting (off by default) where you can make it move some of the messages to Trash instead.

The way the setting works is that the more spammy messages go to Trash and the less spammy ones to Junk.