I also agree, but I point out that the sufficiently perverse could come up with some pretty tough examples. Applying color is a pretty benign style, but what if I wanted a boldface circumflex on a normal letter? Or even more obnoxious, a 10-point circumflex on a an 8-point letter? These could be tricky to compute.[..] Display engines
need to do a better job of applying style to individual reordrant
glyphs, that's all.
I fully agree with this, Do you know any display engine which is capable of this?
Of course, "Garbage In, Garbage Out" is probably a good answer to this: if you ask the system to do bizarre things, it's your own fault (while applying color is not quite so bizarre).
~mark