Hi
Thanks for your interests in our products.
1. If I want the bottom plate to be black, what do I have to do? Or is it not possible?
–> Sorry only matte-frost. The case you were seeing is “BBB acrylic case and RGB Diffuser” which is usually used for RGB light effect. So if it’s not white-tinted one, the color of light would be distorted.
If you want black color, you can set the RGB LED color to black-tinted one.
2. can someone please explain what parts 5 and 5-1 are? I don’t understand. :c
–> Those are for feet. In the middle of page, you can see the feet which are composed of 2 layers, innter and outer layer.
(http://i0.wp.com/winkeyless.kr/wp-content/uploads/2015/01/20150913_134058_0022.png
http://i1.wp.com/winkeyless.kr/wp-content/uploads/2015/01/DSC_1912.jpg
http://i1.wp.com/winkeyless.kr/wp-content/uploads/2015/01/DSC_1910.jpg)
Thanks.
Hojin.Yi