Change the colour of "post-meta-comments"

Hi

Could you help me with the detail on how to change the colour of “Leave a Reply” text on a single post.

URL : https://www.chaitanyasblog.com/drawings/the-way-to-know-life-is-to-love-many-things/

The current colour is a deep blue, which isn’t legible on the background colour I have chosen.

Thank You.