When working in Keynote I like to use medium and light fonts instead of bold and normal. This causes me a problem because when I hit apple-b to embolden something I want the font to be switched to medium instead of bold, but the default is the bold font. Is there someway for me to either a) redefine what a particular presentation interprets as bold and normal or b) assign a different shortcut key to switch the font between medium and light?
UPDATE: An option c) occurs to me too: could I copy the whole font somehow and play around with its definition to replace normal with light and bold with medium?