Hemerocallis 'Girl Scout' may have been available as early as 1975, but in the 1990's it was readily available.The Girl Scout variation of the Daylily (Hemerocallis), was noted for its bright yellow flower with a tinge of green in the center. Some online sources note it as an orange-ish color, but most note the yellow version.
That is certainly the color I remember.

No longer commercially available.
 

Ceramic Girl Scout Planters  |  Lou Henry Hoover Girl Scout Scholarship in Gardening 

Golden Eaglet Marigold  |  Brownie Scout Marigold  |  Girl Scout Rose

Girl Scout Daylily  |  Girl Scout Seeds and Things  |  Important Girl Scout Trees 

 Flowers of other Youth Groups  |  Forgotten Girl Scout Garden #1 - Girl Scout Memory Garden  |  

Forgotten Girl Scout Garden #2 - Aunt Helen's Herb Garden

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