View Xperia Z3+ bootsplash (Share the tool for those who might interested)

Hi, I am sharing a tool that I had just discover, Because I am attempt to change the white colour bootsplash to black, but apparently the boot splash image is actually black in colour. I had no idea on this since the colour is already black and wish that anybody could assist me.

BTW, here is the tool : LogoRleUtil v.1.1