I don't see what other colors besides Jonquil you think it might be.
The shape is 6212, and was originally made in 3 sizes, the large size was 28" tall the middle size was 20 1/2" tall and the smallest was 16" tall. Height is important since Blenko discontinued the large and small sizes fairly quickly. The large one doesn't appear in the 1965 catalog, and the small one doesn't appear in the 1966 catalog. and only produced the 20 1/2" size for a period of time.
Jonquil was made from 59-64. Gold was produced in years prior to the production of this shape. Lemon was produced in 68 & 69, but it most often shades from clear to yellow, though a few examples do show little to no variance in coloring. No other yellow/gold colors are close to yours.
If I had to guess I'd say Jonquil vs Lemon
https://web.archive.org/web/20130811023230/http://blenkoarchive.org/blenko_colors.htm#yellow
