Heatmap vs HeatmapGL different color

I’m using a heatmap to represent a large dataset of data using a numpy array with Nones values.

The problem is that wehn i use normal heatmap None value color is white:

while in heatmapGL is the same as zero color:

How can i change this? I’ven been searching in the code, but i am not able to locate it since predefined colorscales are css lists.