Meanings of the cards colors in the substitution

Each substituted lesson is highlighted with dashed frame. The different colors of the cards' backgrounds and frames were added for more convenient working with substitution. Their meanings are:

Background:
- GREEN - means ADDED lesson.
This lesson is brand new, moved in the class timetables, or added by standard substitution in teachers' and classrooms' timetables.

GREY - means REMOVED lesson.
If the text is also grey, it means that the lesson is cancelled completely. If the text is black, it means that the lesson is taught by someone else.

Frame:
- BLUE - means UNFINISHED substitution and you can do this by clicking on that card

- RED - means the COLLISION with lessons in other timetables

- GREY - means the CHANGE on that particular lesson and you can check it by clicking on that card.

So with combination of these colors you can see the state of each lesson during making the substitution. All unchanged lessons have a pink background.