[UI/UX] Enhance the colour and size of chrome extension popup

[gitgoap]

• Update the current colour of the extension to look better.
• Update the size of the space input and the size of the text that appears.

[anaritadauane]

Hi there!

Please can you assign this to me?

[gitgoap]

@anaritadauane Assigned! Make sure to use better combination of colors and test it robustly.

[anaritadauane]

Thank you! I'm on it