So Spikes has those stripped lowers with "color fill" that adds a contrasting color to all the engravings on your receiver. Having recently finished a lower build, I got to wondering if there was a reasonable (price and time) way to diy.

 

Link to Spikes- http://www.spikestactical.com/new/z/color-fill-color-fill-all-logo-selector-script-p-915.html

Crayons.  Unless you have a steady hand, then I'd try model paint. 

I know there's something sort of like a wax (crayon), but it's greasier and will fill any depressions then wipe away. Can't think of the name though.

Part number 2018T2 at McMaster Carr. Lacquer based paint markers. I've used them.

nail polish and NON ACETONE nail polish remove, fill with nail polish and let dry, wipe excess off with remover, BOOM DONE!

Thanks guys! Hopefully my incredibly uncoordinated hands and non existent artistic skills don't let me down.

Crayon fill is the least expensive and most easily reversible way to go.

Borrow your kid's box of Crayolas and have at it!

The way most gun builders (who do it by hand) do it is to 

lightly heat the frame and used crayon (colored wax) to fill

in the letters.

 

Another way is to wipe the frame with a good cleaner to remove any 

oil or grease and then to use a paint marker to fill it in; the rub the top

(flat surface) with a piece of cloth that doesn't have a thick nap (terrycloth

doesn't work well - but clean shop rags do).

may take a couple of coats till you get used to it, but both ways work very well.

 

Good Luck!

Jt 

I had good luck with testers paint and a little bit of lighter fluid. You can find the testers paint in the model section of any craft or hobby store. Pick your color, mix maybe a drop of thinner in the mix then use a very fine brush to dab in the color. Don't worry if its a little messy. Let it dry for about 5 to 10 minutes then take a rag with a little lighter fluid or alcohol and wipe the excess paint away. I got very good results this way.

Thanks y'all, I'll post some pics when it's done.