Why are some trees so well endowed with beautiful flowers?

Famboyant tree - Beauty by nature
By Nic
@academic2 (7009)
Uganda
May 1, 2007 7:32am CST
There are trees that dont catch your eyes at all, but there are others that are not only well shaped, but they are also have very coourful flowers-are there naturl explanations for this?
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