Nothing irritates me more than someone who comes into the forum brand new and asks the admins and mods to make changes to the way that they like it. The last guys that did that tried to start an open revolt because he didn't like that peoples sigs were in the posts.
So yes, you asking for all these changes after three days on this forum does get presumptuous and gives the impression that you think it should be the way that you want it.
Settle in, sit back and enjoy the forum. Read up on what the rules are, who the players are and get to know the place. Color schemes can be changed to how YOU want them in your own user profile and won't be changed from what they are now for the default.
Once you have been here a while, then you can make a suggestion. I get too many "suggestions" from noobs that stick around for a week, maybe two and are gone.