query: 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(*) ASC LIMIT 1
question: Give the color description that is least common across products.
query_toks: 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 ( * ) ASC LIMIT 1
query_toks_no_value: 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 ( * ) asc limit value
question_toks: Give the color description that is least common across products.