Properties dialog for "Options Chain" contains two sections: Look and Futures.
Background - the background color for odd rows. To choose a color press the button from the right side of the field
Foreground - the text color for odd rows
NC negative - the text color of Net Change if it's negative for odd rows
NC positive - the text color of Net Change if it's positive for odd rows
Background - the background color for even rows
Foreground - the text color for even rows
NC negative - the text color of Net Change if it's negative for even rows
NC positive - the text color of Net Change if it's positive for even rows
Background - the background color for strikes
Foreground - the text color for strikes
Background - the background color for highlight prices
Foreground - the text color for highlight prices
Strikes - the alignment for the strikes
Prices - the alignment for the prices
From "Font" you can change the font size. You can also specify if you want bolded fonts or not.
From "Futures Columns" you can choose what columns do you want to see in the futures table. In this section are two lists: "Available" and "Displayed".
"Apply" button - this will change the previous setting with the actual settings
"Apply to All" button - this will change the previous setting with the actual settings for all the options frames
"Default for New" button - the settings will be set as default
"Cancel" button - the change in setting will be ignored