DWedit has updated Flubbas Goomba emulator (which is a Gameboy and Now Gameboy Colour emulator for the GB Micro/GBA and also works on Nintendo DS and Gamecube Gameboy Player, heres the info:
Fixed VRAM reading (stupid bug)
Fixed sprite palette selection
GBC games can no longer change monochrome palette
Fixed scanline 0 interrupts
(fixes Ninja Gaiden, Shantae, etc)
Added fake HDMA
Changed memory system to support bankswitching to 4k resolution
Identifies to game as a Gameboy Color
Added VRAM bankswitching
Added RAM bankswitching
Added partial HDMA
Added extended attributes per tile and sprite
Added background colors
Added sprite colors
Rearranged tilemaps in vram
Removed support for borders
Added Raster effects for Window layer
Moved to 4-layer drawing system
Draws solid background tiles below the layers to allow color 0 to be visible
Replaces one layer with the GUI when necessary
Added Double Speed mode, but it's disabled now