When picking the standar color is very hard
Pantone, as every end of a year, announce what kind of color will be trendy the next year. For this 2018, the purple violet was the trendy choice on color. However, seems like the color was associated with the situation of the year, and this year was the worst for some people. Violet was a beautiful color for me. Even i have frequently used in some background posts -kick me if i'm wrong-. For this 2019, the living coral will rule on everything, even here on #Steemit 
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Why the living coral?
Because Living Coral is the color of the good life into the sea. Pantone has choosen right this color because they want to inspire people to dream into caribbean life and think positive. And yes, it's a good color for the year of our life renaissance!
Steemians must use this color...
Because this is must attractive for luck when posting some topics. If you want this to be trendy, this is one of the colors must use in 2019.