The color scheme for the highlight boxes for each of the columns are:

Under the Hood: <div style="background-color: #d5d5dc; border: solid 1px black;">

Common Cents: <div style="background-color: #f5f5dc; border: solid 1px black;">

Aristotle to Digital: <div style = "background-color:#ff6666; border: solid 1px black;">

About Comics: <div style="background-color: #dee7d2;border: solid 1px black">