We had our calendar styling setup in a CSS but a couple days ago the look of it got altered, I made some changes and it seems to be ignoring the CSS - was the control put somewhere else?

I had this problem when initially setting up the calendar on my site.  Best suggestion is to move the styles into a new CSS file, and upload it to your base directory in the file manager. 

Then put a link to that file in the Custome Footer HTML.

<link  rel="stylesheet" media="screen" type="text/css" href="/GuildFiles/######/calendar.css">

(Replace ###### with your guild number, and calendar.css with whatever you named the file)

Browsers read HTML top down, adding this to the footer will force it to overwrite any existing style that may be in place.  It actually seems like in the HTML of the site, "default-calendar.css" some how ends up after any custom CSS you add in the usual place and wipes it.

For me when I select "Enable Calendar Style Settings" the default colors on the front override the images I have on them.
I have the second and theird tab colors disabled and the backrounds still do not change... I would like to point out all this worked days ago and just stopped working with no changes on our end. 

This was fixed recently - thanks.