Update the transparency of the exported icons so there isn't a white
background clashing with the button color. Additionally, the tube fin
and rail button small icons were updated to be more in line with other
icons.
The tube fin is bigger and has the body tube showing like other
fin small icons.
The rail button works better in a side profile rather
than an offset profile.
Signed-off-by: Billy Olsen <billy.olsen@gmail.com>
Rail Button icons have been updated to better match the theme
with the rest of the icons. Tube Fin icons have been updated
with a larger tube for the fin (rather than the launch lug icon)
in order to disambiguate the two options.
Signed-off-by: Billy Olsen <billy.olsen@gmail.com>
