Please help support the site by donating at the link below.https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=8ZRU34U47BESW
your problem with the led is that average red leds require the lowest voltage of all the colours (about 2V normally) and average blue leds require the highest (sometimes upto 4.5V!!!!) however if you follow the lines from the led you may find a resistor somewhere you can swap out