What problem does this address?

Better UX for pasting/copying colours within the colour picker. Below is a Figma mockup.

What is your proposed solution?

See above screenshot. Essentially:

• Colour picker opens with "detailed inputs" mode already active
• "Show detailed inputs" toggle (now unnecessary) is replaced with a button to copy colour value
• In future iterations, could potentially condense colour value input fields to a single row to reduce vertical space.