This particular one is put on by a former Tsuvian. I was on that platform and it was kind of fun. So, finding some of the people here is great.
And yes, the color challenges are great in a sense that they inspire you to take pictures and keep the different colors in mind - or create something.
They are fast. If you write a big long blog and nobody, or one person, looks at it - it gets a bit frustrating.
I don't mind just a few views if I write it for my blog and post here as well. But I got dinged by the cheytah bot for one of mine and I don't like that. I am asking to get whitelisted, but until then - there is only so much time in the day.....