Unread mail font color not working if sender colors applied

I applied different backgrounds for different contacts in Sender Colors through Preferences…Mail. I didn’t touch the default Text color setting (black) for each one. I also applied a specific color (blue) for the font on Unread mail using Preferences…Fonts and Colors. However, the unread mail font is not applied on the senders that I specified. Example, Sender A has a red background, but new messages (unread) are not in blue font but the black default in Sender Colors. Is there a way to have ALL unread messages from ALL users to use the Unread mail font?

In other words, keep the background(s) if specified for a sender, but new messages (Unread) will appear in blue font?