A continuous random variable can at times assume an infinite digit of values within a particular range; thus, it is usually the results of some given type of measurement. The “mix” of colors in the bad is therefore not considered as a continuous random variable (Petrov, 2012). When the M&Ms is drawn from a particular bag, the number of M&Ms of any given color is 0,1,2,3 and so on thus making it not to change.
Reference
Petrov, V. V. (2012). Sums of independent random variables(Vol. 82). Springer Science & Business Media.