Flowers are Yellow
To be precise, daffodils are yellow.
I even took this picture.
They're in the planting bed in our front yard that has a rather paltry crop of daffodils and tulips at the moment, but will be absolutely dripping in irises a bit later in the season.
Ooh, and the lovely carpet of grape hyacinth that we have at the moment isn't half bad either. (even though it's not yellow)