Thank you very much for your reply.
You have a point, maybe a black pots can absorb heat more so it may give more warmth as you said, but can't depend on it, i will keep watching, also just about half an hour by typing this post i transplanted that one from container 3 [S. Marzano] to a black pot that deeper and not small, i think it is 8" diameter, but i think it will die sooner or later because the soil wasn't strong sticky enough so the seedling wasn't in place when i transplanted, hope i didn't damage the roots, in all cases i just transplanted and i have to keep watching it and see if it will keep growing or i killed it already.
I wanted to transplant one of the two in that black pot #2, i don't know if 2 seedlings in addition to one small new grown one can be fine in that one pot, i can fill it with soil, but i don't know what kind of soil it was used in pot 2 as i mentioned earlier, i am worried if i put soil that is not much same as the original existing soil in the pot, that will not affect the seedlings?
I moved that pot #1 to have another location where it will receive more sun, before it was in a place that couldn't receive enough sun light longer before it goes under the house shade, so i moved it a bit away from the house shade so it can have more sunlight during the day, maybe that what caused it not growing faster or better, also i will keep watching.
I planted 3 types of tomatoes and i said i don't want many varieties, but i would like to give it a try and have one more type, but i don't know what to choose, i don't anything not red color and i don't want that sweet type, so which one to choose? Maybe i want something that give me smaller sizes like dwarf or mini types, not too small but let's say in tennis ball size or little smaller if available, not the size of table tennis ball definitely.
In one arabic forum about plants and gardening, i checked one topic about tomatoes, and one member pointed out about a kind of disease or pest that attack the tomatoes, i saw one pic he included as an example[maybe not taken by him] and to my surprise or shock i saw that in my tomatoes seedlings in that container 3 and the second smaller seedlings in pot 2 above, he said this kills the productivity and health of tomato even if you give the plant 100% perfect environment, so maybe this will slow down or kill my tomato plant before even i can see any growing to flower at least, and he said there is no solution for it except if i cover that seedlings from beginning when they sprouted out which is late already, or use some kind of babies toy at animal form in the pot maybe to scare that pests, hahaha, funny!!!