Pen shortcuts to yellow lines?

[GreatEscape_13]

I'm doing some panels with geometric yellow lines, and that means needing a reliable way to do thin yet consistent color lines on the models. I'm talking quite thin lines (not thick hazard stripes Iron Warriors style, but very thin yellow lines). Normally I would use paint and a tiny brush for most colors, but a thin art pen has always worked well for me when doing black geometric lines (using tape to mask). Does anyone know of an art pen or paint pen brand that might accomplish what black art pens can do? And still be yellow enough to be seen on grey surfaces? 

 

This might be a shot in the dark (as in such a marker or pen may not exist), but I figured it was worth a try to ask!

Cheers.

[Gurth]

If you’re using masking tape anyway, you could reverse-mask: prime the model white, paint the relevant areas yellow, mask them off, and then paint the rest of the model.