Make hazard concrete map colour darker

[JAicewizard]

Is your feature request related to a problem? Please describe.
A clear and concise description of what the problem is. Eg. I'm always frustrated when [...]
Currently on the map the purple/yellow hazard concrete is very, pink.
I think its a nice touch to have map colours but it is very light pink and it makes hard to see belts.

Describe the solution you'd like
I would like the map colours for this concrete (and likely all the other ones) to be darker, to match their darkness in the factorio world.

Additional context
This is a screenshot of what it looks like, at the top you can see the normal hazard concrete.