lol i found a gimp version of that a while back. Their like almost identical
@--> Valarian
Its to dull. Heres a link to pictures of our sun http://www.boston.com/bigpicture/2008/10/the_sun.html
but basically you need to make it like brighter. When i think of the sun, i dont think of a sorta dull star, i think of a bright object that hurts your eyes to look at