Major UI changes required.

[codingiitg]

• Currently the boxes have all rounded edges and we want to see how the squared versions would look.
• We also wish to change the colour from purple to something more warm (eg. Orangish tint).
• Also update the README.md by attaching new screenshots of the app after the above changes are made.

You must create a new branch to implement the above features and then make a PR.