I think a bit of the trouble with colors revolves around player agency. Creating a beautiful build and being inspired by the colors of the game is a big part of what we enjoy.
When I saw Shadow Cerulean Gleam after a gleambow event !! ZOMG I wanted to use it all the time…but I have no control or ability to really get that color gleam. We have had several gleambow events…and even with buying it…I don’t have nearly enough.
Keep in mind, my current build uses over 13 SS of gleam in it and as I grow the build, I would need more. I am not building something garish:
Builds just use a lot of gleam.
That along with the revelation that after (almost) 2 years we have only access to 30 - 40% of the colors of blocks:
Many of us thought that Rental Planets might be the solution. I could buy a world, choose the colors and BAM have that Shadow Cerulean gleam. It appears that is not going to happen.
I don’t know the solution if not rental planets.
For me it is Shadow Cerulean Gleam, for someone else it is Orange Clay. I don’t know a way to systematically change it so that as players we can get what we INDIVIDUALLY want without flooding the universe with colors.
I hope that all makes sense 
I’m sure ya’ll will find a solution!