Yes, They are all frosted, to avoid spotting.
The whites are all 5050 1 SMD, thats the single square diode, "retro" at CT.
Theres a Single 2 SMD in the center to pull a bit brighter for depth of field.
The green Yoda is a 6mm frosted.
Colors used on People were frosted Sunlight.
Kits will give you the same bulb in all spots, which is fine, other then Yoda. The brighter bulb causes the green to flow
into the letters, so a dimmer LED is used.
It is my opinion to stay all frosted, and simply chose your brightness level.
The game looks stunning in White or Sunlight, and a bit of color added to the playfield...be it some Purple, Blue, Red, or Ice Blue.
But mostly, 90% of your backbox, and general illumination, is white.
You can color match all your inserts, same frosted, in Twin 2835..red with red, green with green, etc.
But if you use 1 level lower in brightness, a 1 SMD, you would use Warm White in your Yellows and Oranges,
It isnt hard...the hardest is trying to get it perfect to Your taste, with only one attempt,
Dont be afraid to experiment..color changing bulbs, new colors, strips. to try out,
You can go conservative, or light to play in the dark.
This link might help with many of your questions.
Many great vendors for you, and sales coming up this week.