Change github corners color in Night mode and toggle

[bhaumikmistry]

The color of github corner needs to change with the night mode toggle.

• update github corner to chagne colors. Helpful like

We want to have as many people as possible contribute to open-connect-art and teach people how to contribute and take part in the Hacktoberfest

Take a look at the project's README.md for more details.

[khanaaziz1]

i want to contribute