If performance is an issue (as appears to be the case from the comment in #getViaSuperclasses:) I’d anticipate that it might be worth explicitly implementing frequently used messages such as borderColor, customWindowColor etc along the lines of
borderColor
  ^[self get: scope top class->#borderColor] ensure:[scope pop]
… in order to avoid the time cost of the whole dNU: dance.


tim
--
tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
Strange OpCodes: RCR: Rewind Card Reader