 5-level buda colormap: 

RGB = crameri('buda',5)

%%
% Some of the values in the image are below zero and others are above. If this dataset represents
% anomalies, perhaps a diverging colormap is more appropriate: 

crameri('cork') 

%%
% It's unlikely that 1.7776 is an interesting value about which the data values 
% diverge.  If you want to center the colormap on zero you can either change 
% the color axis limits using |caxis|, or you can keep the current color axis
% limits by simply including the |'pi