Modern-day The bi-colored tulips of the past have nothing on Rembrandt tulips. Although the colors are still faded, the culprit is not viruses carried by aphids. All exchange of diseased bulbs was outlawed in the Netherlands.
So what are modern-day Rembrandt tulips? They are healthy flower bulbs with vibrant, one primary color with secondary color feathers or flashes. Rembrandt tulip plant information explains that this is the outcome of deliberate breeding, not aphids.
Rembrandt tulips of today are only available in a select few color combinations, such as white with red feathers lining the petal margins. Another current combo is yellow with red streaks. The petals are covered in streaks.