Alex Malloy of New York registered this sport of H. 'Flash Dance' in 2004. The leaves have a blue-green center with a margin that starts out yellow but changes to creamy white as the season progresses. This small size plant bears pale lavender flowers in June.

According to The Hostapedia by Mark Zilis (2009), "Since 'Flash Dance' is a sport of 'Pacific Blue Edger', 'Little Boy Blue' is essentially a margined version of 'Pacific Blue Edger'."