You can find the eyedropper under “Browser Tools” in the Tools menu or under “More Tools” in the { -brand-name-firefox } toolbar menu (at the end of the { -brand-name-firefox } toolbar).
Gallwch ddod o hyd i'r dewisydd lliwiau o dan “Offer Porwr” yn y ddewislen Offer neu o dan “Rhagor o Offer” yn newislen bar offer { -brand-name-firefox } (ar ben draw bar offer { -brand-name-firefox }).