Solution: Kaleidoscobra

Answer: HOLI

The puzzle begins with a small line of emojis, a large crossword grid, and a much larger pile of emojis. Either by staring at the grid itself and noticing the colors or starting to look at the crossword clues given by the emojis, solvers should hopefully realize that every color in the grid can be replaced by ROYGBIV as appropriate. For confirmation they're on the right track, the flavor text is intended to clue A British guy fought; didn't win or more traditionally Richard Of York Gave Battle In Vain. From here, solvers can begin filling in the grid. To help solvers, the answers to the emoji clues are in alphabetical order.

Clue Answer
โž•ADD
๐Ÿ‘ถโžก๏ธ๐Ÿ‘ด๐Ÿ“AGE
โŒ›โฌ…๏ธAGO
๐Ÿ‘ฉโ€๐Ÿฆฐ๐ŸŽŽANN
๐Ÿชตโž•๐Ÿ”ฅASH
๐Ÿป๐Ÿป๐ŸปBEARS
๐Ÿ‘ถโžก๏ธ๐Ÿ‘ด๐Ÿ“ฝ๏ธBIOPIC
๐ŸฆBIRD
๐Ÿธ๐Ÿ BOG
โ›ณโž•1๏ธBOGEY
๐Ÿค–โž•๐Ÿ‘จโ€๐Ÿš€BORG
๐ŸฅถBRRR
๐Ÿ‘‹BYE
๐ŸŒฒ๐Ÿ ๐ŸŒฒCABIN
๐Ÿ๏ธ๐ŸŒŠ๐ŸšชCOVE
๐Ÿฆ€CRAB
๐Ÿ’ฉCRAP
๐ŸฆœDITTO
๐Ÿ‡ฆ๐Ÿ‡ช๐Ÿ™๏ธDUBAI
๐Ÿฅš๐Ÿ”„EGGROLL
๐Ÿ‘‰๐Ÿ˜Ž๐Ÿ‘ˆEGO
8๏ธEIGHT
๐Ÿชฆ๐Ÿ’ฌELEGY
๐Ÿ‡ฆ๐Ÿ‡บ๐ŸฆEMU
โŒERR
๐Ÿ’ถEURO
๐Ÿ‘€โž•๐Ÿ‘ƒโž•๐Ÿ‘„FACE
๐ŸฆทFANG
๐ŸคบFOIL
๐ŸฆŠFOX
๐Ÿ’ฌGAB
๐Ÿ˜‚GLEE
๐Ÿฆข๐ŸซGOOSEBERRY
โœ๏ธ๐ŸฅคGRAIL
๐Ÿ˜ชGROGGY
๐Ÿฆนโ€โ™‚๏ธGRU
๐Ÿฅ™GYRO
โœ๏ธ๐Ÿ–ผ๏ธHIEROGLYPH
๐Ÿšซ๐Ÿค๐Ÿ”ต๐Ÿ–ฅ๏ธ๐ŸขIBM
๐Ÿ‡ซ๐Ÿ‡ท๐Ÿ‘‡ICI
๐Ÿ’กIDEA
๐ŸŽฎ๐Ÿ“ฐIGN
#๏ธINTEGER
๐Ÿ’ขIRE
๐Ÿšซ๐Ÿ–ฅ๏ธIRL
๐Ÿ”ดโž•๐ŸŸก๐Ÿฆธโ€โ™‚๏ธIRONMAN
๐ŸŒฟIVY
๐ŸšฝJOHN
๐Ÿงฒ๐ŸคกJUGGALO
๐Ÿบ๐Ÿ›ข๏ธKEG
๐Ÿง’๐ŸงฑLEGO
โ™ŒLEO
๐Ÿคฅ๐Ÿ—ฃ๏ธ๐Ÿ—ฃ๏ธLIES
๐Ÿ‘„โž—2๏ธLIP
๐Ÿšซ๐Ÿฅ‡LOSE
โค๏ธLOVE
๐ŸŸข๐Ÿช LUIGI
๐Ÿ’๐Ÿ’MARRIED
๐Ÿงฑ๐ŸŽจMASONRY
๐Ÿคบโš”๏ธโ˜๏ธโ˜๏ธโ˜๏ธโ˜๏ธโ˜๏ธโ˜๏ธ๐Ÿฆนโ€โ™‚๏ธMONTOYA
๐ŸŸค๐Ÿ’งMUD
๐Ÿง‚๐Ÿงช๐Ÿ“›NACL
๐Ÿ‡ฐ๐Ÿ‡ช๐Ÿ™๏ธNAIROBI
๐Ÿค–๐Ÿ™๐Ÿค–๐Ÿฆธโ€โ™‚๏ธNEO
๐Ÿฆ๐Ÿช™NFT
๐ŸŒŠ๐ŸŒฟNORI
๐ŸคชOAF
๐Ÿ‘นOGRE
โ˜๏ธ๐ŸšซโœŒ๏ธONLY
๐ŸŸ ORANGE
๐ŸชจORE
๐Ÿ™ˆ๐ŸŒฒ๐ŸŒฒ๐Ÿ‘ปORI
๐Ÿ“œ๐ŸŽจORIGAMI
๐ŸŒŒ๐ŸนORION
๐Ÿ‡ซ๐Ÿ‡ทโœˆ๏ธ๐Ÿ ORLY
โ˜€๏ธ๐ŸŒŽ๐Ÿช๐Ÿ•ฐ๏ธ๐Ÿ—บ๏ธORRERY
๐Ÿค•OUCH
๐Ÿคโš–๏ธOUNCE
๐Ÿ“คOUTBOX
๐Ÿ“œPAPER
๐Ÿ‡ต๐Ÿ‡ชPERU
๐Ÿ‡ฐ๐Ÿ‡ท๐Ÿ‘จโ€๐ŸŽคPSY
๐ŸŽฒ๐Ÿ‘จโ€โš–๏ธ๐ŸคREF
๐Ÿ–ฅ๏ธ๐Ÿ’ก๐ŸŒˆRGB
๐Ÿซณ๐Ÿ’ฐ๐ŸฅทROGUE
๐Ÿ”ฅ๐Ÿ›ก๏ธ๐ŸคบROY
๐Ÿ‘€SEE
๐ŸŒฑSEEDLING
๐Ÿ‡ช๐Ÿ‡ธ๐Ÿ‘ฉSENORA
๐ŸซกSERVICE
๐Ÿ‘ŸSHOE
๐ŸชดSHRUB
๐ŸSNAKE
๐Ÿ“†๐ŸŒƒ๐Ÿ“บSNL
๐ŸŽถ๐ŸฆSONGBIRD
โšพ๐ŸงฆSOX
๐Ÿ‹๏ธโ€โ™‚๏ธSTUD
๐Ÿคฟโžก๏ธ๐ŸŠSURFACE
๐Ÿ’ชโœ’๏ธ๐ŸคTAT
๐Ÿ‘”TIE
๐Ÿˆ๐ŸšŒ๐ŸŽฅ๐Ÿ‘ปTOTORO
๐Ÿ“•๐Ÿ“˜๐Ÿ“—TRILOGY
๐ŸŸฃ๐Ÿ UBE
๐Ÿง๐Ÿ–ฅ๏ธ๐Ÿ“‹UNIX
๐ŸบVASE
โ™VIRGO
๐ŸฉปXRAY
๐ŸซYALE
๐Ÿ’ดYEN
๐Ÿ‘YES
๐Ÿช€YOYO
๐Ÿฆ“ZEBRA

Twenty squares in the grid are numbered and will autopopulate the extraction cells below the grid - as the grid is filled in, these will fill out the clue FESTIVAL OF COLORS FOUR which clues HOLI.