The color of the activity should be adjustable to be transparent or only taking up 50% of the activity. We have a weekly activity that saves a 1-hour time slot in our calendar so that if a client has an emergency and needs to get in quickly then we have a time that is reserved that we can fit them in. With the activity being opaque in color it sometimes gets missed by admin who schedule because they mistake it for an appointment or task even though the color is different.