Hi Saketh Varma,
Create calculated field & add
IF METRIC1 >=0.3 THEN 'green'
ELSEIF METRIC1>= 0.10 THEN 'light Greeen'
If u need to add more metrics on different colors continue the same as above
Add the calculated field into color in marks section.
Create the calculation field and write the If conditions based on your requirement, Place the calculated field on colors and assign the color plots.
Please go through the link where I've explained in detail how to achieve this.
Let me know If this help. Feel free to ask If you've any query.
Have you tried following the directions here:
This article is extremely hard to find for some reason, but it is super helpful in situations similar to yours.
Hopefully this helps!