The Bulb you have is an un lensed 5050 Diode (5mmx5mm)
A frosted dome, disperses light more evenly, and brighter in a twin SMD.
GI, and Backbox benefit greatly, but the one you have can work for a smaller radius of color.
Inserts that are small, will all work well with single SMD, 2 SMD, 4 SMD, etc. You likely will need a few Non Ghosting Bulbs, but not every spot.
You can get all non ghosting, if you wish.
The only reason to color match inserts, is if you want them darker, or even to color change,
Your white inserts can be 3 shades of white or any color.
A Whole game can be done with Sunlight Frosted 2 SMD, everywhere, and then follow up, with a few changes for taste.