+different monthly precip color table

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@41688 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/gis/colors.desc

@@ -22,6 +22,7 @@ haxby: relative colors for bathymetry or topography
 ndvi: Normalized Difference Vegetation Index colors
 population: color table covering human population classification breaks
 precipitation: precipitation color table (0..2000mm)
+precipitation_monthly: precipitation color table (0..1000mm)
 rainbow: rainbow color table
 ramp: color ramp
 random: random color table

lib/gis/colors/precipitation_monthly

@@ -0,0 +1,9 @@
+0 grey
+1 brown
+50 yellow
+100 green
+200 aqua
+300 blue
+400 violet
+500 magenta
+1000 red