I recently got the 8070 supercar Lego set and tried to put a convertible top on it. Unfortunately, I didn't have the pieces I needed in red (the color of the car) and so I wanted to recolor them. I tried many ways, but spraypaint works best.

PS-- This is my ible for the Summer Krylon Contest so please vote if you like!

Step 1: Safety and Materials

Safety: Take all precautions mentioned on your can of spraypaint ( work in a well ventilated area, wear a mask, etc. )

Materials:

Spraypaint for PLASTICS (take a piece of the color you want to compare at the store)
Note: ^ You can use regular spraypaint but you will need to rough up the sides of your Legos with sandpaper.

2 pieces of paper to spray on

the Legos you wish to recolor

Step 2: Spray

Coat your pieces thoroughly with paint and then quickly blow the paint out of the holes. Transfer to the other paper.

Step 3: Touch Up

Touch up the Legos lightly on the other paper if needed.

If you can see lots of spots and the Legos aren't fully coated, repeat step 2.

Shake them around on the paper then leave them there to dry. (15 to 20 minutes)