Is it possible to manually set the rgb colors of a heatmap?

[AIMPED]

Maybe this helps:

Manually customize colorbar - scatter python

I have data sorted by month of collection. I am trying to assign a varying color range specifically to season as well (ie. cooler months have cooler colors - light blue for October and gets darker towards January). I have been working from https://plot.ly/python/colorscales/#custom-colorbar and this example Create colorbar from a source label (string) rather than integer? Python. I cannot figure out how to prevent each section in colorscale from blending together – I would like it to look more …