Has anyone ever tried an LED indicator bulb upgrade on the 3IS?

Since I don't like the yellow blob the standard WY21W creates in the front, I was gonna go for silver bulbs, yet found these to be even more interesting, since not only the eliminate the yellow blob but also look amazingly better in operation (see video, left: original, right LED):


Those were used:

http://ledchoice.eu/en/wy21w-585-744...ns-yellow.html

Only downside, and this is why I'm asking here: there may be error codes due to the reduced power consumption of the LEDs. (I have an IS300h F-Sport with LED headlights)

 

they make error code free LEDs for turn signals

just an example, I havent used these before

http://www.ebay.com/itm/Amber-Error-Free-No-Resistors-Required-7440-7444-LED-Turn-Signal-Light-Bulbs-/121132898510?pt=Motors_Car_Truck_Parts_Accessories&hash=item1c341558ce&vxp=mtr

 

I would not use LED in front since the bulb is visible. I use chrome coated bulbs.
In the rear, LEDs might look ok.

 

i have the orange turn signals LED bulbs that HID powerhouse sells here on CL installed.
they are pretty much as bright as the incandescent bulbs.
i would like to try another brand just for fun.
if you want mine ill make you a deal.

 

How hard is it to swap out the front/rear indicator lights?