One year I bought mixed hyacinths and sorted the bulbs by color. You can't really tell the true color, but the reddish bulbs will be pink or lavender or magenta. Bulbs with a darker cast will be purple or blue and the palest tan bulbs will be yellow or white. That year I ended up with pink, lavender and the lovely apricot Gypsy Queen planted together and they were fortunately all later blooming.
Gypsy Queen, Pink Pearl and Top HitAlso later blooming hyacinths are pale yellow City of Haarlem and Blue Jacket. China Pink have remained in bloom for a long time.
The extended cold we complained of in February had a positive effect on hyacinths. Stems are longer and florets bigger. The fragrance is as delightful as ever. I'm glad I gave up tulips for hyacinths and kept daffodils. As hyacinths wane, late daffodils take up the show, followed by azaleas and dogwood. The very first white azalea blossoms are open in a sheltered area.