I think what you are after is one of these
Lens-mounted Filters for Hutech/Canon Enhanced Cameras VLC-58 Daylight Filter - 58mm $199.00 VLC-67 Daylight Filter - 67mm $205.00 VLC-77 Daylight Filter - 77mm $229.00
They fit on the front of the lens and brings the spectral sensitivity to normal. You just need step up or step down rings so only one is needed to fit all your lenses.
Here
http://www.sciencecenter.net/hutech/canon.htm
Bert