The APC tailights on Natasha's PT are called Generation 2 Eurotails, they show only red in lights, no yellow at all. I don't know what this means for European standards. They meet US standards. There are lots of tailights out there now, some I think nicer than the ones Natasha has, some have yellow, some don't. Also, you now can get bulbs that are chrome colored when unlit, and then when lit are the color you need, red, yellow, etc. Finally, there is a spray-on tint you can apply over the lenses to make them darker. You just need to check with local laws to see what is allowed.
Some of the tailights will be in the magazines we sent to you. There are plenty. Also there are a lot of vinyl graphics that you can add to your tailights, as well as colored bulbs, LED bulbs, etc.