How to compute counts using count() in R

Say you want to sum up how many times a colour appears in a data table in R? code from computed-counts-first3-ig-van-01january2016-square-piechart.R

some_data_table_withcounts = count(some_data_table, "column_to_count")
# e.g. 
countcolourname = count(data3, "colourname")
# easy peasy right? as if :-)
# inch by inch