Translation questions about colors settings for math macros

The color settings have several settings for math macros, that I don't understand. I have no idea what these two are, so I cannot translate: math macro blended out math macro hovered frame These two I can translate, but it'd nice to know what "old" and "new" parameters means in this context:

Re: Translation questions about colors settings for math macros

Helge Hafting schreef: The color settings have several settings for math macros, that I don't understand. I have no idea what these two are, so I cannot translate: math macro blended out math macro hovered frame These two I can translate, but it'd nice to know what "old" and "new" parameters