This tutorial will show you how to change the default Color, Shape, and Font of a Comment Box in Excel the easy way.

In Word, you can change the default font via the font settings window, which is logical. However, when you access the same area in Excel (which you can do by pressing Ctrl-Shift-F), you’ll find ...

Click "Colors," a link located beside "Choose What Colors Will Be Seen in Previous Versions of Excel." Excel displays the default color palette. Select any color you want to change in the palette.