How to show unread mails "bold" in the mail list..?

Hi. I like to show my unread messages marked bold in the mail list (and changing the color of the “bubble” marks the mail as unread would be great as well, but secondary). I couldn’t find this in the design editor… possible - and how - or is there no way? As an alternative changing the font color for unread messages would be helpful as well. The small “bubble” is not really helpful (for me) identifying unread items in a long list. Thx and reds