That did come out nicely!
Are those the correct colours in the states? The middle colour is amber in the UK.
Those are the correct colors for older lights. Newer ones have slightly different colors to aid the color-blind - some bluish tint in the green, and amber instead of yellow. The red is also more of a reddish-orange. Traffic lights in TX are also mounted horizontal. Every state has slightly different rules and standards... but none of them have the red-amber combo light.
Thank you Merrak. I was thinking the red needed to have a little orange in it. Maybe even a little darker in the ON condition. I dunno about Amber tho. If you look up the hex for amber you get either FF7E00 which is really orange or "Automotive Amber", FFE816 which looks like it has a lot more more yellow in it. The latter may work for the yellow light. As far as the green (bottom) it's pretty pale and looks almost white when they are lit up on most of the traffic lights here in Texas. Maybe it's just me and my old eyeballs.
I'm still futzing around with the layers and modes and opacities trying to find the right combination for each color to make them all look right before I try and post anything. This sucker is a monster tutorial. Definitely advanced due to complexity not to mention length.