all dbz fans here

[Electric2Shock]

and when goku ssj4 and vegeta ssj4 did fusion why did there hair go red it has to be black isnt it

There's no logic in the hair colour they choose for the fusions.
At the very start of the series, Vegeta had brown colour hair, I believe... then they changed it for some random season.

(By the way, anyone wonder what it would be like to see Nappa in SSJ?)

A gold tail with a golden goatee. :P

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but still i cant found Broly.I am confused.
He is maybe in dbgt or...what??

Broly comes in the time of the 10 days before the Cell Games. The time given for them to train to defeat Cell. I am not sure since Broly is not canon. I have about guessed this because:

1. Goku and Gohan were fighting at Super Saiyan Grade 4 (Full Power Super Saiyan and not Super Saiyan 4)
2. Gohan did not ascend to Super Saiyan 2.
3. Mirai (Future) Trunks was present there.
4. Vegeta and Mirai Trunks were fighting at Super Saiyan Grade 2 (Ascended Super Saiyan not Super Saiyan 2)

The reason no. 2 might not be true since teen Gohan needed strong emotions to ascend to SS2. Not like anyone else who can use SS2 at will.