Firmware archive whose name only says colorful, likely meaning the Colorful brand, without giving a model, board or version, so its contents have to be identified by hand. At 10.3 MB it probably holds one or more SPI flash images. Open it, compare any board identifiers with the PCB, and check that each image size matches the flash chip. Always read and keep a copy of the original chip with a programmer before writing an unverified dump.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @lappysan. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →