I am using a child theme based on Leto, including compiling the SCSS files as well. With version 1.0.9, I get the following message:
Error: Undefined operation "green - #111". ╷ 1477 │ border-color: green - #111; │ ^^^^^^^^^^^^ ╵ modules/_woocommerce.scss 1477:20
SASS has the possibility to do arithmetic operations, but doubt this way is correct. Changing a base color is best done with the built in SASS color operations.
(Note: I corrected it myself temporary in the scss file)