I need to update colors on the calendar

I am trying to create a form for an appointment, but I am unable to

edit the colors of the calendar. I need to know how to enter CSS code to do the following:

1. Text color on the calendar should be #b5050a / rgb(181,5,10) .
2. The buttons for the selected appointment time should be #b5050a.
3. The buttons that have not been selected should be visible on a black background. #ffffff is fine for text or button color to make it visible.
4. Unavailable days of the week (weekdays) should be #530506.
5. Available days of the week (weekends) should be #ffffff.

In this screenshot with the white background, the month/year are black and this is the text I need to show in red.

The unavailable days here are white. I cannot see the days that are actually available (Sat/Sun)

Hello Jennifer,

Thank you for creating the ticket as requested via chat support. Please check my test form https://form.jotform.com/231546654966973.

Let us know if it matches what you need and if there's more to to modify.

Thank you!