Well hello PCApexers, I am a noob. I am also an adult Lego hobbyist and I joined this forum specifically to learn how I might somehow alter the color of Lego parts manufactured in Light Bluish Gray to Old Light Gray. If this problem has been solved, please provide a link.

Explaination of the above terms:
Light Bluish Gray-The new light gray in the Lego product line, has a very very faint light blue tint; seen best under cheap florescent lighting.

Old Light Gray-The light gray used in Lego products up until about 2004-05. This gray has a very faint yellow tint which can become more visible over aging and other conditions.

There are some builders, such as myself who feel that the two light grays are not compatible; and therefor, are unwilling to mix them. Some prefer the new and others the old. I prefer the old light gray.

My dilemma: there are a number new parts manufactured by Lego which come in the new light gray; and I would like to use them in my builds but I use the old light gray. I am searching for a way to change the tint in these new parts from bluish to yellowish. Even if there is a way to make the light bluish tint less noticeable, that might suffice.

Lego is made from ABS plastic.



Thanks for reading. If you have questions, please do not hesitate to ask.

Legoder

Vinyl dye, Vinyl Dye, Body Filler, Leather Dye, Plastic, Vinyl Paint - Paint Guns, Car Wax, Fiberglass Repair, Metal, Wood Filler as an example. Take the parts you want color matched to a custom auto paint dealer and have them custom mix you vinyl dye to the color of your existing parts. You can get aerosol or by the pint and airbrush the new blocks to match the old ones.

I have never done it with lego blocks but it does work on other types of plastics. Hope that helps.

You gotta figure LEGO changed some part of the chemistry of the ABS plastic or the dye that caused the color change. Perhaps the new color is cheaper to produce or uses a more environmentally friendly process.

A dye isn't likely to change the dimensions of a Lego piece is it? You wouldn't get swelling? I've never dyed plastic so I was curious

-MF

It more than likely will change the dimension a small amount. It is basically a very thin spray paint that is designed to stick to vinyl and plastics very well.

Lego's are so cool. I'm serious, my kids and I still build Lego machines. Vinyl dye is the best suggestion you will get for changing the color without actually painting them. Painting them will definitely change their dimensions.