2 Gradient colors in 1 table (matrix)

Hi! I have a table with negative and positive numbers. Depend on the pressed slicer there are 3 types of data: Only positive numbers, only negative numbers and mixed numbers.

You can notice that there is only 1 gradient: from orange (min) to blue (max).

What i need:

Positive numbers- ---> gradient color from light blue to dark blue

Negative numbers ---> gradient color from light orange to dark orange

Is there any way to do that?

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And 1 more question. Is there any visuals to introduce my data like the pic. below

I can see only 1 variant with 3 different visuals filtered by a certain year (pic below)