Is there a reset option for the Canon IP2770 that might resolve color issues?

While there isn't a direct 'reset' button, you can often reset the printer settings by navigating to 'Device Settings' or 'Printer Settings' and choosing 'Reset to Factory Defaults'. Be aware that this will erase any custom settings you've configured. Alternatively, try removing and re-installing the printer driver on your computer; this can sometimes resolve software-related color problems.