CS+ (Switch) secret codes

==========>>>>>>>>>> Cave Story+ (Switch version) known secret codes <<<<<<<<<<==========

Credits to duncathan_salt, Super Something, the aforementioned people's own sources, and
possibly others for this information. (I did not discover any of these myself.)
If you happen to know of any other codes not listed here, please contact me on Discord
(periwinkle#1349) so I can add them to this list.
All codes work on both the US (v1.2) and the JP (v1.0) carts, unless otherwise specified.

########## Character sprite codes ##########
These temporarily change your character sprite when starting a new (empty) save file.
(They do not work with existing save files.)
The sprite change takes effect until you quit out of the file or close the game.
Enter these codes on the title screen (where it says "Press A to begin"). The easiest way
to get to that screen is to load any save file and then quit.
Upon entering a valid code, the "Press A to begin" text will flicker briefly.
• Yellow Quote: Hold L and press B, Y, B, Y, B, down
• Red Quote: Hold L and press B, Y, B, Y, Y
• Blue Quote: Hold L and press B, Y, B, Y, B, B, B, up
• Curly (or Quote in Curly Story): Hold L and press B, Y, B, Y, down
• Christmas outfit: Hold L and press B, Y, B, Y, B, B, B, Y, Y, left
• Halloween outfit: Hold L and press B, Y, B, Y, B, B, B, Y, Y, X, X, -, -, right

* Note: Similar codes also exist in Cave Story WiiWare (and are actually documented
in a couple of places:
https://cdn.discordapp.com/attachments/312733374831788034/679774368695320715/image0.jpg
https://gamefaqs.gamespot.com/wii/954432-cave-story/cheats )

Unlike with CS+ Switch, the codes in CS WiiWare can also change your
character sprite in existing save files (not just new files).

* Note 2: The PC version of Cave Story+ also has these codes programmed in, but due to
certain circumstances, they don't actually work. However, there is a hex patch that
allows these codes to work again:
https://www.cavestory.org/forums/threads/cs-costume-changing-cheat.14222/


Besides the sprite change, these codes otherwise have no effect on gameplay.

########## "Konami" codes ##########
These codes work anywhere in game. You can revert their behavior by entering them again.
Upon entering a valid Konami code, a door opening sound should occur.
For the following codes, "KONAMI" refers to this sequence of button presses:
Up, up, down, down, left, right, left, right, B, A.
• KONAMI, right stick button: Speeds up the game by 50% (by alternating 1 frame/2 frames.
  Input on the skipped frames is duplicated from the previous frame.)
• KONAMI, L: Shrinks the size of the game (480p when handheld, 640p when docked at 720p)
• KONAMI, R: Disables lighting effects when the new ("Cave Story+") graphics are enabled

As far as I am aware, these codes do not exist in any version of Cave Story(+) besides
the Switch version.