Embedded my podcast & want to change the colors!

Site URL: https://rectangle-cylinder-6l4c.squarespace.com/config/design

Hello, I recently embedded my podcast from my hosting platform Captivate onto my website I'm working on. I noticed it embedded with colors that are in the color spectrum on my site styles, but also I want to change them. I'm not sure how to do that though, can someone help me? There is a photo below of the embedded player I'm talking about!

Hi, can you take the site to password-protected and post the password for me so I can take a closer look?
[[ Settings > Site Availability > Password Protected ]]