KEduca, part of the KDE-Edu package, is a program for dealing with interactive tests and exams. Currently, it relies on colors to tell you whether your answer is correct or not. However, this is bad accessibility-wise, since color-blind people might not be able to distinguish between the colors used (green for correct answers and red for incorrect answers. Therefore, new images are needed.
This are the current images KEduca is using:
As explained above, the images for correct/incorrect answers need to be redone in order to eliminate all the problems. The application icon, which is similar to the other images, don't have accessibility problems, but might also be redone, to reflect the changes. There are also other images/icons in KEduca that receive some care. The only requirements for the images is that they don't rely on colors to pass information and that they fit nicely with KDE's default icon theme.
If you wish to help, please contact me . In case more details are needed, I'll happily provide them.