any will work ok with components just remember though dummy's wont decompile transparency values so if you set one then decompile it again it will be blank (so you have to keep adding it there every-time you decompile
dummys also will not do wheels for some reason ?
the transparency number is a percentage in decimal form for how much you want transparent
1 = 100%
0.5 = 50% (so you would be correct)
hope that helps