You are using GUIDE, which uses "traditional" figures.
In traditional figures, edit boxes and text boxes cannot have color for individual lines or individual parts of strings.
I do not know whether it is possible for edit boxes or text boxes to have color with App Designer uifigure() -- there are more formatting facilities for App Designer and I have not researched it enough to figure out all of the possibilties.
For traditional figures, uitable objects can be set to different colors for different cells, provided that the cells are text format. Scrolling these to a particular line (such as the last line) is a bit annoying to code.
For traditional figures, uicontrol style 'listbox' and uicontrol style 'popup' can be set to have different colors for different lines. Scrolling a 'popup' to a particular line is not possible (that I can think of.) Scrolling a listbox to a particular line is a bit annoying to code.