Define and adopt a red/green/gray colorblind friendly palette

[pzwsk]

We use green / red / gray to showcase status of open data criteria

However, 8% of the population who is considered color blind may have difficulty to read it if no proper contrast.

Action: define and adopt a green/red/gray colorblind friendly palette.

Help on this: https://usabilla.com/blog/how-to-design-for-color-blindness/

[pzwsk]

Here is what is suggested in #267

and result in extreme case of colorblindness

[pzwsk]

Here is what I suggest

It works quite well with all form of colorblindness https://coolors.co/881300-009500-a8a8a8-e6e6ea-f4f4f8