I remember swapping out my car's 7" sealed beams with Cibié Z beams (illegal in CA at the time). They made stock sealed beams look near-amber in comparison.
One of the reasons they were yet to be DOT approved (so illegal) was that they weren't sealed units. Cibié did a workaround where the lens and reflector were a sealed unit and the bulb fit in to a transparent recess in the rear of the unit. I think DOT still had a problem with the pattern but I don't remember. spiderman302 might.
When I installed clear lenses and switchbacks in my 1300 I saw the same thing — the 55/60W halogens looked a little amber. Putting in a set of recommended G2s fixed that. I put one in to compare it with the halogen upgrade. Halogens had to go.
I've been tempted to up grade to a newer bulb but a) these work well and b) getting to and operating the spring bail was a bear. I didn't remove anything. That probably would have helped.
The position bulbs were swapped out for amber bulbs (only because I never found yellow bulbs) for a bit of contrast. I like the look but yellow would be better.