Number plate color

Hello, I want to color only numbers in licence plate...

I tried this:

pawn Code:

format(string, sizeof(string), "%s", cInformacion[ID][cPatente]);

format(string2, sizeof(string2), "%s {FF0000}%d", string, cInformacion[ID][cPatente]);

But doesn't work, the letters are right, but the numbers no, help...

Thanks.