This is, honestly, a very unnecessary update to the original theme.
I think the original theme was already fine but I felt that the SFX and music were too low (just like the other themes) so I just went back to fix it and change a little something or two while I was at it :)
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Credits:

Mario, Luigi and backgrounds (animated and non-animated) by: Mister Man. Princess peach sprites by: NES Boy (although I painted the sprites with the colors of the color restoration of patch of SMA2. by Asaki). Yoshi sprites by: Barack Obama, P-tux7 and sonikku. Title screen by: Alefy San, Daemoth and GregoryTheGamer. World map by: Alefy San and Badassbill. World map border by: Dogtoon64.
SFX by: deezer.
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Changes:

-Top screen (a small change. The yoshi's island/donut plains/chocolate island map is now the alternate version of when you complete the special world).

-Bottom screen (actually it's still the same background but now is the variant that has those rocks (I think they are rocks) in green color instead of white and I made them more visible).

SFX & music (SFX are a little bit louder, the "launch" SFX is now different and the music is the same but starts and ends a little bit different).

Super Mario World (SMW-album) - Soichi Noriki, Mario Club Band, Koji Kondo