With the proliferation of gray text on white background, which is more for older people or others with even slight visual impairments to read, it would be good to have the ability to apply black text on white background (e.g. high contrast) while reading a specific email from the right click menu. Although you can force black on white for all emails under Tools>Settings>Language and Appearance>Colors>Override the settings speficied by the content>Always, those settings look worse on some HTML emails. It would be better to have a general setting to use the content specified colors, with a right click to change to a user defined color scheme (or high contrast) for an individual email.