Made the text change color dynamically according to the theme

[Saransh-cpp]

Related Issue

Closes #56

Proposed changes

Made the color parameter dynamic using provider in every page.

Please review and let me know if any further changes are required. Thank you.

Screenshots

One of the page is attached below, rest are similar.

In light mode

In dark mode

[harry-hov]

Screenshot looks promising to me. Thanks for working on this.