Gradient on Kangaroo Inflation

Hi! Im trying to do a a 3d representation of V02 Max. Thats why I did an abstract drawing of two lungs and later a inflation simulation. Im trying to make it change color depending if the offset I do after the inflation depends on how big the the offset was. For example: If the offset is between 50-60 it should be red, if it is between 60-70 it should be orange and it it is bigger than 70 is should be green.
I tried lots of options but could not figure it out, I im not a frequent user of grasshopper! Would be very grateful if someone can help me!

Greetings, (22.3 KB)