What is the description of the color used by least products?
CREATE TABLE ref_colors (
    color_description VARCHAR,
    color_code VARCHAR
)

CREATE TABLE products (
    color_code VARCHAR
)
SELECT t2.color_description FROM products AS t1 JOIN ref_colors AS t2 ON t1.color_code = t2.color_code GROUP BY t2.color_description ORDER BY COUNT(*) LIMIT 1
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the description of the color used by least products? ### Input: CREATE TABLE ref_colors (
    color_description VARCHAR,
    color_code VARCHAR
)

CREATE TABLE products (
    color_code VARCHAR
) ### Response: SELECT t2.color_description FROM products AS t1 JOIN ref_colors AS t2 ON t1.color_code = t2.color_code GROUP BY t2.color_description ORDER BY COUNT(*) LIMIT 1