changed df-messenger color to suitable one and removed duplicate scroll up button

[arpitv970]

Description

(Write your answer here.)

Checklist

• [x] I am making a proper pull request, not a spam.
• [x] I've checked the issue list before deciding what to submit.

Related Issues or Pull Requests

fix: issue #539 and changed chat-bot icon color suitable to the site.

Screenshot

[netlify[bot]]

✔️ Deploy Preview for musicophilia ready!

🔨 Explore the source changes: 04624bfa65b7d3809690edfb3df33d5eb099614e

🔍 Inspect the deploy log: https://app.netlify.com/sites/musicophilia/deploys/610a8acf56224d0008988cb0

😎 Browse the preview: https://deploy-preview-540--musicophilia.netlify.app/