About your theme, its a great work, but i cant use it because is a non coloured theme. To change the colors you need colors, grayscale are always the same, so you can make it lighter or darker but you cant change the hue of that!
For example if you enter in my tool and put a saturation of -100 you will obtain your theme. Gray one. but if you want to change the colors after that you cant. Its in the same RGB space (the Red, Green, Blue values are the same)