Colorzilla Extension with Custom Palette

I need a Colorzilla color picker extension developed for me, compatible with Firefox. This extension needs to have a unique feature - it should allow me to identify the nearest color from my personally curated GPL colors palette (consisting of 208 named colors) when I point to any item online. Other than this, I would like the option of possibly storing the URL of the item along with the identified color each time, allowing me to easily track color data scattered across the web. The deadline is within a month. Preferred skills and experience: - Expertise in browser extension development, preferably firefox - Familiarity with Colorzilla - Understanding of color theory and GPL color palettes.