black phone icon is now red?

I think we recently upgraded the them (although I am not positive). There is a telephone icon that appears and it used to be black and looked like this (and was an image)

?

Now it is a bright red, which really doesn’t match the color scheme of our site. I can no longer copy and paste the phone icon image.

See upper right hand corner of the site at:

https://www.markhamandcompany.com/

My web designer can’t figure out how to fix or over ride this.