Change colour of read more

Hello,

I’m hoping someone can help me, I would like to change the colour of my read more box when a user selects one of my posts on my site https://www.lovefromlisa.com.

An example of the page the read more box can be found on is https://lovefromlisa.com/15-gift-ideas-for-toddlers/

If there’s also a way to have the font look the same as the other boxes in the same section that would be great.

I’m currently using PipDig’s Crystal theme.

Thanks so much.

The page I need help with: [log in to see the link]