Go to Theme Settings >> Select Styles and Colors section.
Pick a text color for body, paragraphs
Main color Scheme
Secondary Color Scheme. Pick a text color for titles, post names.
Config color of label products:
+ Sold out background color
Buttons "Add To Cart", Button text "Add To Cart": Button in product grid item
Buttons "Quick View, Wishlist", Button text "Quick View, Wishlist": Button in product grid item
Buttons "View Cart", Button text "View Cart"
Buttons "Checkout", Button text "Checkout"
Buttons "Buy It Now", Button text "Buy It Now": Button in product page
Button "Sign up", Button text "Sign up": Button Sign in form newsletter
Button "Back To Top", Button text "Back To Top"
Button text "In Stock": Button in product page
Button text "Out Stock": Button in product page
Button ''Tooltip'', Button text "Tooltip''