If using icons, I'd recommend using a common style if possible. To tighten up these radio buttons, I'd suggest making them all a common color (probably black), then seeing if they can be resized to have a common height.
^ This applies to icons used in the table below, too — using a single style, rather than a mixture of outlines and colors etc. After discussing, we're suggesting removing icons from input areas like this for visual consistency with other notebooks.