This theme's creator (PhatMartino) posted here so you might want to take a look. It has the download links too.
What I did was download the files on my Phone and open them with iFile. I then proceeded to unzip the downloaded files in iFile and copied on of them to a new sub section made in the pathway /var/mobile/Library/Keyboard/ColorKeyboard/Themes/
It was my first time customizing so there are shorter and easier methods that I most likely don't know of.