Today I've added a new feature to StitchBuddy HD, although it still needs some testing: In the color list a thread can be selected to be highlighted, leaving the other threads gray-scaled. This way it is much easier to identify where a specific thread is used, e. g. before changing its color.

In StitchBuddy for Mac this function is available for a long time, and it was missed by me and others on the iPad. Expect it to be incorporated into the next update of StitchBuddy HD...