This is a great mod, looks 100% better with the all reds.
I'm doing mine this weekend, bought my film from flyeyes and apparently it's mot compliant without the bulb change. The film turned up and it's got little holes in to let through the amber/reverse light.
Bit dubious but looks good on the site so will update with pics once complete!
If not will have to resort to a standard red film.
http://www.flyeyeskit.co.uk/