Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
lūtĕŏlus, a, um, adj. dim. [1. luteus], yellowish: mollia luteolā pingit vaccinia calthā, Verg. E. 2, 50: violae, Col. 9, 4, 4: olivae, id. 12, 47, 9.