In Research UI it is possible to see the probability of a possible breakthrough - green, yellow, red. But as the choosing actually occurs the colors are absent. Since it is possible to avoid the research screen altogether by "staying in the same field" it is in this case impossible to make an informed decision if the chosen tech was a red "lucky break" or a green one bound to come again. An easy solution would be to color code the techs in the breakthrough screen as well.