Mimosa ia a flower which is traditionally offered to ladies on the 8th of March, even though I'd like receiving it more often, withouth being conditioned by a specific date.
I think I might suggest you to have an alternative to the flower with a cocktail , light and delicious, which has the same name.

A Mimosa is a cocktail-like drink composed of one part champagne and one part thoroughly chilled orange juice.

So many enjoyable things can be yellow and uplifting!