getCalendarColors retrieves the connected user’s current palette. Use its IDs
for createEvent, updateEvent, and calendar-list color configuration.
Example
Inputs
Only the optionalaccount input is available.
Output
Returns{ calendars: Record<string, { background: string; foreground: string }>; events: Record<string, { background: string; foreground: string }>; updatedAt?: string }. Keys are provider color IDs. Palettes can vary by account and change over time, so do not infer IDs from hex values.