If a Group is assigned a colour (under ACP, Manage groups, Group wide settings, Group colour) when group members are displayed, they are displayed with class="username-coloured" which sets font-weight=bold. In most group cases is this probably desirable styling.
One group that probably doesn't need the emphasis is the Bots group, which by default display as Google [Bot]. Shouldn't colour be enough to distinguish a group member without also resorting to using a bold font. Or at least shouldn't this be optional via ACP?
I can workaround the problem by assigning no Group colour to the Bots group, but then members of the group are not distinguished.
Perhaps a future enhancement would allow the ACP Group wide settings to specify both Group colour as well as a check box to specify bold weight or not. Is it worth opening an Improvement bug ticket for this?