How can I replace variable facecolor in stacked bar?

Hello everyone,

I'm beginner on matlab. I have some problem in replacing the variable color in matlab code. I used this code to generate stacked bar. Example :

hb=bar(A2,1,'stack'); #A2 = number contains in column 1 and column 2, row represent in each sample.
set(hb,'EdgeColor','none','LineStyle','none',{'facecolor'},{[1 1 0];[1 0 1]},'BarWidth',1);
xlim([0,525])
ylim([0,1])

the result showed like this :

However, I have many files which consist of the different number of colors such as 3, 4 column in each file. Could you please suggest me about replacing variable color (facecolor) on matlab? I tried to use this variable in below, but it displays the error.

mycolor={'[1 1 0]','[1 0 1]','[0 1 1]','[1 0 0]','[0 0 1]','[1 0.4 0.6]'};
hb=bar(A2,1,'stack');
set(hb,'EdgeColor','none','LineStyle','none',{'facecolor'},{mycolor{i}},'BarWidth',1);

The error showed : ??? Index exceeds matrix dimensions.

Thanks in advance.