A confusing point about colors

Hello, there is a confusing point about colors. I set the `title_color=0969da`, which is the same color as GitHub displaying the repository title in. However the color will not render in the card correctly, it will be another close color like `0a6a80`. Such problem will also happen when setting `text_color`.

I try to use the exactly same colors as GitHub to keep the profile page more harmony. This problem is just so confusing.