I found this flower growing at the beach. If you look closely, you can see sand on the stem. It amazes me that flowers are able to grow in such salty and sandy conditions.
This photo was captured with a Nikon D7100
Nikkor Lens VR 18-120mm f/3.5-5.6G
Here is the ColorChallenge list by 
MondayRed
TuesdayOrange
WednesdayYellow
ThursdayGreen
FridaySkyblue
SaturdayIndigo
SundayPurple