What you actually said was "imitate", which is effectively "copy" except imitate usually implies to make a copy to pass off as your own (Like how people say Microsoft imitated Apple because they couldn't inovate their own original ideas). You did not say similar, and never mentioned the concept.
But to be fair, you have now explained 
And since you want the concept, not the exact same with different words, this seems fine to me 
I'll have a go at making these, certainly the ELF Loader and Junkener (And the blank
) and the rainbow when I work out how best to make a rainbow.
Would you like them in .psd? That way you can edit them.
Also they will probably be:
A rounded rectangle, with see through top and the small black at the bottom for text. White text (Unsure of font yet) and the icon on the clear bit.
Do you want a color below the black bit, like on the icons you showed, and if so, what colors?
EDIT: I won't use the icon you showed for the ELF loader as it is someone elses work, but I will make one that is very similar for you 
EDIT 2:
Finished!
ELF Loader:

Junkener:

Rainbow Dualboot:

And the blank one should be attached (.psd)
Are they good enough? Let me know if you want different sizes, or a different format for the blank one.
*Oh and sorry the rainbow isn't brilliant, I just transformed a rectangle filled with rainbow colours (Couldn't think of another way)