Nothing. Colors on Spanish flag don't have any meaning.
red and like on their flag red and yellow like on their flag
See the related link.
what does the yellow star on the flag mean
There's no yellow on the Chinese flag
The yellow on the Jamaican flag stands for the SUNSHINE
A yellow flag means you have injured a player,foul,just like football.
The Spanish flag now in 2010 has 2 horizontal lines going across the way. The flag is red and yellow,mostly red though. The pattern of the colours goes like this;- Red for the first part,Then yellow in the middle part, Then red in the bottom part. So you can kind of imagine the flag. You can also type into Google images 'Spains flag' OR 'The Spanish flag' That might be easier to find out what I've told you!
It means that it's the center of the flag...
A yellow flag flown on a ship indicates that there is disease onboard. It also the signal flag for the letter 'Q'.
the sun
it means the sun.
castle