Change colours

One element. Select it with Visual edits, then: "Make this dark green."

All buttons. "Change all buttons on the site to #0F5132 with white text."

A section background. Select the section, then: "Give this section a light cream background (#F8F5F0)."

Site-wide palette. "Change the site's primary colour to navy (#1B2A4A) everywhere it is used, including links and buttons." Consider Plan mode for this.

Text colour for readability. "The white text on the hero is hard to read; darken the image overlay."

Give hex codes when you have them. Colour names work but are less precise.