How do I create Punchcard that sorts bins with color?

[splunkman]

Im trying to make a punchcard to visualize incoming issues per hour in the prvious week.
This is the result i get with the following code: 

| eval issues="Issue Priority"
| stats count(issues) by date_hour date_wday

I really want to get more bins like on the right side so that i can assign values with color. E.g. 0<10 = green, 11<70 = yellow, 71<150=red. 

Something i need to include?

[splunkman]

Thank you!
It worked with the Categorical color mode.

[ITWhisperer · Accepted solution]

I haven't used that viz before but it looks like (from the documentation) that you just need to eval another field

| eval issues="Issue Priority"
| stats count(issues) as count by date_hour date_wday
| eval range=case(count < 11, "Green", count < 70, "Yellow", count < 150, "Red")