Multiple color bar graph in Matlab

I want to plot a multi color bar graph in Matlab

I have the data

x=[1 2 3]

y=[10 20 30 40]

Please find the attachment and solve the query

Answer 1

[KSSV]

x=[1 2 3] ;
y=[10 20 30] ;
c = {'r','g','b'} ;
figure
hold on
for i = 1:3
    bar(x(i),y(i),c{i})
end