Excellent job on the paint! They both look like cadmium glass!kinda late to the party but I have had very good luck using Duplicolor Metalcast Yellow paint on lenses to change the color. This way I'm not sacrificing light output by getting a junk yellow bulb.
Actually, to get the amount of filtration at the bulb to get the fully-saturated selective yellow, you're decreasing light output to the same level that you'd decrease it by filtering at any other stage. That's how filtration works. It doesn't matter if it's at the bulb, a secondary envelope around the bulb, on the reflector, or or on the glass.I am not avoiding yellow blubs as they do NOT decrease light output, Spraying and effectively ruining your lights by painting them do decrease light output. I see one of the 10 commandments here. THOU SHAW DECREASE LIGHT OUTPUT WHENEVER POSSIBLE. REGARD FOR YOUR SAFETY IS NOT NEEDED.