1'st goal - the taillights:At first I will paint taillights. So, I need: taillights, 3M wiping cloth, paper and the degreaser .
I want to achieve the same as the rest of the car look, so the taillights needs to act as they are painted the same solid color. But they need to be transparent, safe and durable. I also want a flat black car, so I need this kind of paint. So let's make some paint:
Mix the solid color with transparent paint to achieve semi transparent paint. The mixture proportions generally varies from 1:5 to 1:10. I used 1:7 and sprayed two times. Of corse all the paint intergents of the two paints needs to be the same. The paint will last mixed for up to ten minutes, than solid and transparent will start to separate. So hurry up after mixing paint.
1. clean surfaces well,
2. degrease the surfaces with a paint degreaser /check first if it will not disturb the plastic surfaces/, 
3. wipe the surfaces delicately with the 3M wipe cloth /this is somewhere near the grade 500/,
4. mix the self made transparent paint well, add the second part of the paint/this which makes the chemical reactions/ add some dissolvent,
5. spray the color paint once - make thin surface spraying left/right than make the second up/down,
6. let it dry but not completely, we just need to wait untill the paint is completely dry,
7. spray transparent finishing paint in dedicated glossyness - I used 10% of glossyness to achieve flat look.
8. let it dry once more,
Here are the pics:
In the painting room:

and in the sun:

The second part of this thread is the glossy spoiler:
1. clean surfaces well,
2. degrease the surfaces with a paint degreaser /check first if it will not disturb the plastic surfaces/, 
3. wipe the surfaces with the grade 320 paper to achieve plain surfaces ready to paint,
4. degrease once more,
5. spray the color paint once - make thin surface spraying left/right than make the second up/down,
5. let it dry but not completely, we just need to wait untill the paint is completely dry,
6. spray solid color paint for the second time,
7. let it dry,
8. spray transparent finishing paint 100% glossy,
9. let it dry but this time check the paint specifications to polish the paint in the right moment,
10. when it's time to polish, plain the surfaces delicately with grade 1200 paper,
11. use polishing paste, and felt to polish surfaces /beware of keeping rotating felt in one place for a longer time - it will surely heat the surface too much/
12. use window cleaner to take out the polishing paste,
13. take some photos to post them here 
