SMD LED's Seem Quite Small...

 ... Until you get the bright idea to use SMD resistors to save weight! See the tiny white thing?  That's the LED.  And the little spec beside it, that's the resistor.  I had no idea they would be so small... it didn't occur to me that the ebay vendors would be photographing those things in such closeup.  I'm going to try to see if there's a larger size of SMD resistor.  Ideally I would be able to solder the resistor directly to the LED, forming one piece to mount.  BTW the white thing in the upper-left is the package of 50 resistors.

Here they are getting ready to be soldered.  It turns out that it's possible, but I didn't get any pictures of the soldering process, mainly because I wasn't optimistic enough to have a camera ready.  I'll follow up with some notes on how I did it and some pictures.

This is for adding some nav lights to the ladybird.  If there were some ready-made ones I think I would buy them without hesitation, but it's been educational learning how to deal with such tiny pieces.

SMD LED Notes and Tester

 Here's some more information on SMD LEDs.  First, they are small. really really small.  And impossible to tell apart regarding the color.  To sort out the colors I received in a package, I put together this LED tester.  It's got two servo pins to pick up and power the LED, and a 120 ohm resistor so that it can be powered by a 1S lipo.  So far it's working well, and the tips don't touch when the tweezer is squeezed together.  Everything's assembled with shrink tube.  Be careful, because if the LED slips (as I learned by hard experience) it will shoot out of the grip of the pins and be long gone.

Here's the resistor values I'm using, based on the LED data card from the ebay vendor.  Two nice resistance calculators are here (with color codes) and here (with parallel and series calculations).