Outside of black and white, feel free to use these colors:
Blue - 11568c
grey - d6d6d6
If designers could please submit examples of a Skydiving or Scuba Diving icon that would be great. The further icons for reference will be:
Cars, Mountaineering, Running, Climbing, Freediving, Photography, Bicycling, Surfing, Yoga, 4x4, Snowboarding, Skiing, Motorcycles, Kite Surfing, Traveling, Martial Arts, Bungee Jumping, Fitness, Shooting, Hiking, Rafting, Swimming, Kayaking, Traveling
The prize winner will likely be used for continued work on the website as more content is required.