By number of distinct colors, what official LEGO set has the most pieces? A recent question shows the "monochrome" Steamboat Willie set actually contains about 20 colors. I was expecting fewer, maybe a dozen or so at most. So this got me wondering...

By number of distinct brick colors, what official LEGO set has the most pieces?

For example:


1 color: ____?
2 colors: Maybe 27 pieces for 40045 Shark
3 colors: Maybe 1211 pieces for 21050 Architecture Studio
4 colors: ____?
5 colors: ____?
...
50 colors: ____?
....


Each transparent color counts as a distinct color, as does metallic and glitter, and historic colors count, too. As shared in a comment, Bricklink recognizes up to about 100 colors. Colors on mini-figures do not count.

Past or current sets count. The only stipulation is that the set is an official LEGO one. This question might show a trend in themes: Architecture for example probably wins on fewest colors / most pieces, while Creator might take most colors / most pieces.

A similar question asks: What Lego set has the most unique colours?
I have a few:


3 colors: 2882 parts for 3450 
6/5 colors: 4502 parts for
40179. Note: color count depends if you include brick separator
as a part or not.
11 colors: 2428 parts for 10181
15 colors: 2455 parts for 2000431
23 colors: 7513 for 75192
37 colors: 2613 parts for 2000430