@Dog4u2
You can change and customize the color scale of every layer on Windy.
Go to Settings and click on Customize color scale.
For example on the right side of the picture below you see my own settings for Wind.

BF2B1953-9F69-47F8-ACDC-D64932A2CC10.jpeg

So if you want to change only the right side of the scale to more darker colors you can do it by yourself.
https://community.windy.com/topic/6455/colors/2