Hi and thank you for doing more work on the Swiss Cheese Model!
Work as noted per mail today.
USD 25 is fair, i think.
Walls, yellow, gradient from:
R250 G220 B70 to R255 G210 B10
Top text: (Organization, Supervision etc): R50 G48 B40
Barrier text: R130 G110 B60
Side text (Latent, Active etc): R130 G110 B60