@pugsly in your custom.css file, change as desired, everything is based off the MagicMirror fonts:
.MMM-Multimonth .settings {
--background-dimmed: var(--color-background);
--background-weekday: var(--color-background);
--background-weekend: cornflowerblue;
--background-current: Yellow;
--background-header: Green;
--background-weekno: grey;
--background-dow: var(--color-background);
--color-weekday: var(--color-text);
--color-weekend: var(--color-background);
--color-current: var(--color-background);
--color-dimmed: var(--color-text-dimmed);
--color-header: var(--color-text-bright);
--color-weekno: var(--color-text-bright);
--color-dow: var(--color-text);
--color-event: Red;
--back-rounding: 8px;
--alignment: center;
--fontsize: --var(--font-size-xsmall);
}
If you’re talking about the undocumented feature, It’s not ready yet, I just had some critical updates caught in the crossfire of forgetting to build on a dev branch. :)
Also, you may want to scrub any previous custom.css for the module out and start over, a lot of the module’s css changed when I did the “one entry to rule them all” functionality above, and it may be confused a bit. This was mentioned in an older release.