The ability to change colors in the Timeline Dashboard

As discussed with Leo by Zoom, i would like to be able to change the colors of the column view in a time line dashboard.
At the moment there a specific colors connected to specific columns. For example, the values of column 13 will always show in a timeline as pink ans column 14 in darkish red.
It would be great if it was possible to adjust these colors in your own way that fits the purpose.