Describe the bug
In a bit of an oversight our shoots and ladders logo isn't appropriate for colour blindness.
Expected behavior
Use colours that apply well to various kinds of colour blindness. Ideally we can keep the same logo base.
Additional context
Article:
https://knightlab.northwestern.edu/2016/07/18/three-tools-to-help-you-make-colorblind-friendly-graphics/
Colour blindness simulators:
http://www.colororacle.org/
https://michelf.ca/projects/sim-daltonism/