My team would find it beneficial to be able to set separate shading colors for different Services on our booking site to allow our end-user community to find the training session type they are looking for.
For instance, single-user/small group sessions are shaded light blue, and large group sessions (eg:100+ users) be dark blue. This way at a glance on the landing page users could session type they are looking for at a glance when organizations have dozens or more Services offered.