#include <bits/stdc++.h>   using namespace std;   int main() {     int t, i, j, n, x, y;     cin >> x >> y;     bool c = 0;     char a;     for (i = 0; i < x; i++) {       for (j = 0; j < y; j++) {         cin >> a;         if (a !=  W  && a !=  B  && a !=  G ) c = 1;       }     }     if (c)       puts( #Color );     else       puts( #Black&White );     return 0;   }   