set aFile to POSIX path of (choose file of type {"public.image"} with prompt "Select image 1")
set fillColorR to current application’s NSColor’s redColor()
set imgRes to makeMonoColoredImage(aFile, fillColorR) of me
set fRes to retUUIDfilePath(aFile, "png") of me
set bRes to saveNSImageAtPathAsPNG(imgRes, fRes) of me

on retUUIDfilePath(aPath, aEXT)
　　set aUUIDstr to (current application’s NSUUID’s UUID()’s UUIDString()) as string
　　set aPath to ((current application’s NSString’s stringWithString:aPath)’s stringByDeletingLastPathComponent()’s stringByAppendingPathComponent:aUUIDstr)’s stringByAppendingPathExtension:aEXT
　　return aPath
end retUUIDfilePath

on makeMonoColoredImage(aFile, NScolorObj)
　　set aImage to current application’s NSImage’s alloc()’s initWithContentsOfFile:aFile
　　return makeColoredNSImageWithColor(aImage, NScolorObj) of me –色付き単色画像を作成する
end makeMonoColoredImage

on makeColoredNSImageWithColor(aImage, fillColor)
　　set aSize to aImage’s |size|()
　　set aWidth to width of aSize
　　set aHeight to height of aSize
　　set newNSImage to makeNSImageWithFilledWithColor(aWidth, aHeight, fillColor)
　　set grayImage to filterWithNSImage(aImage, "GPUImageGrayscaleFilter") of me
　　set compImage to composeImageWithBlendFilter(grayImage, newNSImage, "GPUImageScreenBlendFilter") of me
　　return compImage
end makeColoredNSImageWithColor

on filterWithNSImage(aNSImage, filterName as string)
　　set aClass to current application’s NSClassFromString(filterName)
　　set aImageFilter to aClass’s alloc()’s init()
　　set aProcImg to (aImageFilter’s imageByFilteringImage:aNSImage)
　　return aProcImg
end filterWithNSImage

on composeImageWithBlendFilter(aImage, bImage, filterName)
　　set aClass to current application’s NSClassFromString(filterName)
　　set blendFilter to aClass’s alloc()’s init()
　　set pictureA to current application’s GPUImagePicture’s alloc()’s initWithImage:aImage
　　pictureA’s addTarget:blendFilter
　　pictureA’s processImage()
　　set imgRes to blendFilter’s imageByFilteringImage:bImage
　　return imgRes
end composeImageWithBlendFilter

–指定サイズの画像を作成し、指定色で塗ってNSImageで返す
on makeNSImageWithFilledWithColor(aWidth, aHeight, fillColor)
　　–Imageの作成　　
　　set curSize to current application’s NSMakeSize(aWidth, aHeight)
　　set anImage to current application’s NSImage’s alloc()’s initWithSize:curSize
　　
　　anImage’s lockFocus() –描画開始
　　
　　set theRect to {{x:0, y:0}, {height:aHeight, width:aWidth}}
　　set theNSBezierPath to current application’s NSBezierPath’s bezierPath
　　theNSBezierPath’s appendBezierPathWithRect:theRect
　　
　　fillColor’s |set|() –色設定
　　theNSBezierPath’s fill() –ぬりつぶし
　　
　　anImage’s unlockFocus() –描画ここまで
　　
　　–生成した画像のRaw画像を作成
　　set imageRep to anImage’s TIFFRepresentation()
　　set aRawimg to current application’s NSBitmapImageRep’s imageRepWithData:imageRep
　　
　　set newImg to current application’s NSImage’s alloc()’s initWithSize:curSize
　　newImg’s addRepresentation:aRawimg
　　return newImg
end makeNSImageWithFilledWithColor

–NSImageを指定パスにPNG形式で保存
on saveNSImageAtPathAsPNG(anImage, outPath)
　　set imageRep to anImage’s TIFFRepresentation()
　　set aRawimg to current application’s NSBitmapImageRep’s imageRepWithData:imageRep
　　set pathString to current application’s NSString’s stringWithString:outPath
　　set newPath to pathString’s stringByExpandingTildeInPath()
　　set myNewImageData to (aRawimg’s representationUsingType:(current application’s NSPNGFileType) |properties|:(missing value))
　　set aRes to (myNewImageData’s writeToFile:newPath atomically:true) as boolean
　　return aRes –true/false
end saveNSImageAtPathAsPNG