Supress scale bar in gadfly

Specific Domains Visualization
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1

I’m sure this is obvious, but I’ve been searching for hours for a solution. How do I suppress the “Count” scale bar on the right?

using Gadfly
# code
plot(x=dnas, 
y=brdus, 
Geom.histogram2d, 
Guide.xlabel("DNA"), 
Guide.ylabel("BrdU"), 
Coord.cartesian(xmin=50000, xmax=200000, ymin=1, ymax=5), 
Scale.y_log10, 
Guide.title("pulse=120mins"),
Theme(background_color="white"))

p

2

Guide.colorkey(title="")

3

Thanks, but that only supresses the title. I need to remove the colour/scale bar completely. This does the trick:

Theme(key_position=:none)