# Change color of the Ocean in GeoRegionValuePlot

I would like to know how to replace the color of the ocean, while keeping the borders between different countries, i.e. replace the blue into transparent color (see the figure). I tried doing it with ColorReplace, but it also changes the colors of the borders.

Hera an example of the code:

vals={
GeoVariant[Entity["Country", "Spain"], "SimplifiedArea"] -> 11.1268,
GeoVariant[Entity["Country", "Peru"], "SimplifiedArea"] -> 6.03548,
GeoVariant[Entity["Country", "Lithuania"], "SimplifiedArea"] -> 4.07754,
GeoVariant[Entity["Country", "Iraq"], "SimplifiedArea"] -> 2.19722,
GeoVariant[Entity["Country", "Libya"], "SimplifiedArea"] ->0.693147
}

plot = Show[
GeoRegionValuePlot[vals, GeoRange -> {{-60, 90}, {-170, 190}}, ImageSize -> 900]]


• Show isn't necessary, and hasn't been for a long time. – rcollyer Mar 2 '17 at 14:40

What you are looking to do is to change the background of your image, and when you are looking for information on GeoBackground you need to know that it is often a proxy for GeoStyling. From the docs, there are two styles added in v11 which accept additional direction: "Coastlines" and "CountryBorders". For example,
GeoRegionValuePlot[vals, GeoRange -> {{-60, 90}, {-170, 190}},