Cristina Castellani: new precip. color tab

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@33531 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/gis/colors.desc

@@ -18,6 +18,7 @@ grey.log: histogram logarithmic transformed grey scale
 gyr: green through yellow to red
 ndvi: Normalized Difference Vegetation Index colors
 population: color table covering human population classification breaks
+precipitation: precipitation color table (0..2000mm)
 rainbow: rainbow color table
 ramp: color ramp
 random: random color table

lib/gis/colors/precipitation

@@ -0,0 +1,7 @@
+0       white
+300     224:255:255
+500     cyan
+750     0:0:255
+1000    153:51:255
+1500    violet
+2000    51:0:51